The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A077779 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A077779

Numbers k such that (10^k - 1)/9 + 2*10^floor(k/2) is a palindromic wing prime (a.k.a. near-repdigit palindromic prime).
(history; published version)

#42 by Joerg Arndt at Thu Mar 26 11:13:49 EDT 2020

STATUS

proposed

approved

#41 by Michel Marcus at Thu Mar 26 11:04:30 EDT 2020

STATUS

editing

proposed

#40 by Michel Marcus at Thu Mar 26 11:04:26 EDT 2020

EXAMPLE

a(n) = 5 -> is a term because (10^5 - 1)/9 + 2*10^2 = 11311.

STATUS

approved

editing

#39 by M. F. Hasler at Mon Feb 10 16:00:53 EST 2020

STATUS

reviewed

approved

#38 by Michel Marcus at Sun Feb 09 02:50:36 EST 2020

STATUS

proposed

reviewed

#37 by M. F. Hasler at Sun Feb 09 02:49:19 EST 2020

STATUS

editing

proposed

#36 by M. F. Hasler at Sun Feb 09 02:49:12 EST 2020

CROSSREFS

See A332113 for the (prime and composite) near-repunit palindromes 1..131..1.

STATUS

proposed

editing

#35 by Michel Marcus at Sun Feb 09 02:16:50 EST 2020

STATUS

editing

proposed

#34 by Michel Marcus at Sun Feb 09 02:16:07 EST 2020

KEYWORD

more,nonn,base,more,changed

STATUS

proposed

editing

Discussion

Sun Feb 09

02:16

Michel Marcus: yes

#33 by M. F. Hasler at Sun Feb 09 01:56:14 EST 2020

STATUS

editing

proposed