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 A132286 #10 Dec 26 2024 03:51:11 %S A132286 1,3,5,7,9,91,101,111,121,131,141,151,161,171,181,273,283,293,303,313, %T A132286 323,333,343,353,363,455,465,475,485,495,505,515,525,535,545,637,647, %U A132286 657,667,677,687,697,707,717,727,819,829,839,849,859,869,879,889,899 %N A132286 Odd palindromes with an even number of digits divided by 11. %F A132286 a(n) = A132285(n)/11. %o A132286 (PARI) lista(nn) = {for (n=1, nn, if (isA132285(n), print1(n/11, ", ");););} \\ _Michel Marcus_, Nov 05 2013 %Y A132286 Cf. A132285. %K A132286 base,nonn %O A132286 1,2 %A A132286 _Artur Jasinski_, Aug 16 2007