The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A062216 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A062216

Numbers k such that the smoothly undulating palindromic number (31*10^k - 13)/99 is a prime.
(history; published version)

#17 by N. J. A. Sloane at Sun Aug 11 14:41:34 EDT 2024

LINKS

P. De Geest, <a href="httphttps://www.worldofnumbers.com/undulat.htm#supp313">SUPP Reference Table - 313</a>

Discussion

Sun Aug 11

14:41

OEIS Server: https://oeis.org/edit/global/2998

#16 by N. J. A. Sloane at Wed Oct 30 01:01:15 EDT 2019

STATUS

proposed

approved

#15 by Jon E. Schoenfield at Wed Oct 30 00:14:37 EDT 2019

STATUS

editing

proposed

#14 by Jon E. Schoenfield at Wed Oct 30 00:14:35 EDT 2019

EXAMPLE

a(n)k=51 -> (31*10^51 - 13)/99 = 313131313131313131313131313131313131313131313131313.

STATUS

proposed

editing

#13 by Jon E. Schoenfield at Wed Oct 30 00:04:22 EDT 2019

STATUS

editing

proposed

#12 by Jon E. Schoenfield at Wed Oct 30 00:04:20 EDT 2019

NAME

Smoothly Numbers k such that the smoothly undulating palindromic primes of the form number (31*10^a(n)k - 13)/99 is a prime.

EXAMPLE

a(n)=51 -> (31*10^51 - 13)/99 = 313131313131313131313131313131313131313131313131313.

STATUS

approved

editing

#11 by Jon E. Schoenfield at Sat Oct 26 17:36:39 EDT 2019

STATUS

editing

approved

#10 by Jon E. Schoenfield at Sat Oct 26 17:36:37 EDT 2019

AUTHOR

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001.

STATUS

approved

editing

#9 by Charles R Greathouse IV at Thu Oct 03 09:54:37 EDT 2013

STATUS

editing

approved

#8 by Charles R Greathouse IV at Thu Oct 03 09:54:17 EDT 2013

KEYWORD

nonn,base

STATUS

approved

editing