The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A055552 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A055552

Number of base-2 strong pseudoprimes (A001262) less than 10^n.
(history; published version)

#15 by Max Alekseyev at Tue Apr 23 20:49:04 EDT 2013

LINKS

William Galway, <a href="http://oldwebwww.cecm.sfu.ca/pseudoprimePseudoprimes/index-2-to-64.html">Tables of pseudoprimes and related data</a>.

STATUS

approved

editing

#14 by Charles R Greathouse IV at Thu Apr 12 16:36:15 EDT 2012

STATUS

editing

approved

#13 by Charles R Greathouse IV at Thu Apr 12 16:35:32 EDT 2012

LINKS

<a href="/index/PriPs#primepoppseudoprimes">Index entries for sequences related to numbers of primes in various rangespseudoprimes</a>

STATUS

approved

editing

Discussion

Thu Apr 12

16:36

Charles R Greathouse IV: "Number of primes in various ranges" doesn't seem appropriate, given that these are by definition not prime.

#12 by Russ Cox at Sat Mar 31 12:38:53 EDT 2012

AUTHOR

Eric Weisstein (eric(AT)weisstein.com)

Eric W. Weisstein

Discussion

Sat Mar 31

12:38

OEIS Server: https://oeis.org/edit/global/877

#11 by Russ Cox at Sun Jul 10 18:38:14 EDT 2011

LINKS

<a href="/Sindx_index/Pri.html#primepop">Index entries for sequences related to numbers of primes in various ranges</a>

Discussion

Sun Jul 10

18:38

OEIS Server: https://oeis.org/edit/global/72

#10 by Charles R Greathouse IV at Mon Mar 14 02:46:59 EDT 2011

STATUS

proposed

approved

#9 by Charles R Greathouse IV at Mon Mar 14 02:46:52 EDT 2011

DATA

0, 0, 0, 5, 16, 46, 162, 488, 1282, 3291, 8607, 22407, 58892, 156251, 419489, 1135860, 3115246, 8646507, 24220195

LINKS

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/Pseudoprime.html">Link to a section of The World of Mathematics.Pseudoprime</a>

Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/StrongPseudoprime.html">Link to a section of The World of Mathematics.Strong Pseudoprime</a>

KEYWORD

nonn,morehard

EXTENSIONS

2 more terms a(14)-a(15) from Charles R. Greathouse IV, Aug 15 2006

a(16)-a(19) from Charles R Greathouse IV, Mar 14, 2011

STATUS

approved

proposed

#8 by N. J. A. Sloane at Thu Nov 11 07:34:06 EST 2010

LINKS

<a href="/Sindx_Pri.html#primepop">Index entries for sequences related to numbers of primes in various ranges</a>

KEYWORD

nonn,more,new

#7 by N. J. A. Sloane at Fri Feb 27 03:00:00 EST 2009

LINKS

<a href="http://www.research.att.com/~njas/sequences/Sindx_Pri.html#primepop">Index entries for sequences related to numbers of primes in various ranges</a>

KEYWORD

nonn,more,new

#6 by N. J. A. Sloane at Sun Jun 29 03:00:00 EDT 2008

LINKS

E. W. Eric Weisstein, 's World of Mathematics, <a href="http://mathworld.wolfram.com/Pseudoprime.html">Link to a section of The World of Mathematics.</a>

E. W. Eric Weisstein, 's World of Mathematics, <a href="http://mathworld.wolfram.com/StrongPseudoprime.html">Link to a section of The World of Mathematics.</a>

KEYWORD

nonn,more,new

AUTHOR

Eric W. Weisstein (eric(AT)weisstein.com)