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 A092361 #10 May 24 2021 17:20:09 %S A092361 1,3,5,7,9,11,33,55,77,99,101,111,121,131,141,151,161,171,181,191,212, %T A092361 232,252,272,292,303,313,323,333,343,353,363,373,383,393,414,434,454, %U A092361 474,494,505,515,525,535,545,555,565,575,585,595,616,636,656,676,696 %N A092361 Palindromic numbers containing one or more odd digits. %C A092361 Begins to differ from the odd palindromic numbers, A029950, in the 21st term. %H A092361 Harvey P. Dale, <a href="/A092361/b092361.txt">Table of n, a(n) for n = 1..1000</a> %e A092361 a(21) = 212 because it is the 21st palindromic number with an odd digit, the first even one %t A092361 Select[Range[1000],PalindromeQ[#]&&AnyTrue[IntegerDigits[#],OddQ]&] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, May 24 2021 *) %Y A092361 Cf. A029950, A011539. %K A092361 easy,nonn,base %O A092361 1,2 %A A092361 _Michael Joseph Halm_, Mar 19 2004 %E A092361 Corrected and definition clarified by _Harvey P. Dale_, May 24 2021