The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A020938 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A020938

Greatest k such that (k-th prime) < (8 times n-th prime).
(history; published version)

#11 by Harvey P. Dale at Fri May 07 13:24:04 EDT 2021

STATUS

editing

approved

#10 by Harvey P. Dale at Fri May 07 13:24:01 EDT 2021

LINKS

Harvey P. Dale, <a href="/A020938/b020938.txt">Table of n, a(n) for n = 1..1000</a>

STATUS

approved

editing

#9 by Harvey P. Dale at Fri May 07 13:23:00 EDT 2021

STATUS

editing

approved

#8 by Harvey P. Dale at Fri May 07 13:22:57 EDT 2021

MATHEMATICA

PrimePi[NextPrime[8#, -1]]&/@Prime[Range[60]] (* Harvey P. Dale, May 07 2021 *)

STATUS

approved

editing

#7 by Russ Cox at Fri Mar 30 18:55:50 EDT 2012

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

Clark Kimberling

Discussion

Fri Mar 30

18:55

OEIS Server: https://oeis.org/edit/global/285

#6 by Russ Cox at Fri Mar 30 18:51:18 EDT 2012

EXTENSIONS

More terms from _Henry Bottomley (se16(AT)btinternet.com), _, Nov 13 2000

Discussion

Fri Mar 30

18:51

OEIS Server: https://oeis.org/edit/global/247

#5 by D. S. McNeil at Sun Jan 23 03:48:43 EST 2011

STATUS

reviewed

approved

#4 by Joerg Arndt at Sun Jan 23 03:11:36 EST 2011

STATUS

proposed

reviewed

#3 by Jason Kimberley at Sun Jan 23 03:08:41 EST 2011

NAME

Greatest k such that (kth k-th prime) < (8 times n-th prime).

STATUS

approved

proposed

#2 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

NAME

Greatest k such that (kth prime) < (8 times nth n-th prime).

DATA

6, 9, 12, 16, 23, 27, 32, 36, 42, 50, 53, 62, 66, 68, 74, 82, 91, 93, 99, 103, 106, 115, 121, 127, 137, 139, 143, 147, 150, 154, 170, 175, 183, 186, 195, 197, 204, 213, 217, 221, 226, 229, 241, 243, 248, 250, 263, 276, 280, 282, 284, 292, 293, 304, 310, 317

CROSSREFS

Cf. A020900, A020901, A020934-A020940.

KEYWORD

nonn,new

nonn

AUTHOR

Clark Kimberling (ck6@cedar.(AT)evansville.edu)

EXTENSIONS

More terms from Henry Bottomley (se16(AT)btinternet.com), Nov 13 2000