This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A077799 #12 Jun 14 2025 23:51:43 %S A077799 3,5,7,9,11,15,17,21,23,25,27,31,33,37,39,43,45,51,55,57,63,65,71,77, %T A077799 81,83,89,95,99,109,133,139,143,145,149,161,163,195,209,219,225,229, %U A077799 237,243,245,277,315,357,479,513,515,537,551,561,567,583,627,849,857 %N A077799 Numbers m such that a smoothly undulating palindromic prime of the form (rs*10^m-sr)/99 exists, where r and s are two distinct digits and rs and sr denote concatenations of those digits. %H A077799 Ray Chandler, <a href="/A077799/b077799.txt">Table of n, a(n) for n = 1..146</a> %H A077799 P. De Geest, <a href="https://www.worldofnumbers.com/suppsorted.htm">SUPP's Sorted By Length</a> %H A077799 <a href="/index/Pri#pri_supp">Index entries for sequences related to smoothly undulating palindromic primes</a> %Y A077799 Cf. A062209-A062232, A059758, A032758. %K A077799 nonn,base %O A077799 1,1 %A A077799 _Patrick De Geest_, Nov 16 2002 %E A077799 Edited by _Ray Chandler_, Aug 17 2011 %E A077799 Name clarified by _Sean A. Irvine_, Jun 14 2025