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 A127916 #2 Aug 11 2024 14:41:34 %S A127916 6,2,3,2,6,1,7,1,3,2,4,2,10,1,2,2,7,2,2,3,2,0,4,0,6,1,6,1,5,1,2,0,3 %N A127916 Number of n-digit palindromes in bases 2 and 10. Also difference of A120764(n). %H A127916 P. De Geest, <a href="https://www.worldofnumbers.com/nobase10.htm">Palindromic numbers beyond base 10</a> %H A127916 Charlton Harrison, <a href="http://bach.dynet.com/palin/">Binary/Decimal Palindromes</a> %e A127916 Palindromes in bases 2 and 10 are (A007632): 0, 1, 3, 5, 7, 9, 33, 99, 313, 585, 717, 7447, 9009, 15351, 32223... So a(1)=6 one-digit numbers, a(2)=2 two-digit palindromes and so on. %Y A127916 Cf. A120764, A007632. %K A127916 base,nonn %O A127916 1,1 %A A127916 Anton Chupin (chupin(AT)icmm.ru), Apr 08 2007