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 A262515 #9 Oct 07 2015 13:13:03 %S A262515 0,11,12,337,352,631,632,1307,1308,4959,4968,7341,7344,13567,13592, %T A262515 91313,91320,686265,686274,5086881,5086888,12998759,12998768,17434615, %U A262515 17434644,17623923,17623928,42146393,42146394,52705447,52705464 %N A262515 Natural numbers whose squares are present in A259934. %C A262515 Every other term is even and every other odd. See comments at A262514. %C A262515 a(31) > 10^8. %F A262515 a(n) = A000196(A262514(n)). %Y A262515 Cf. A000196, A262514, A259934. %K A262515 nonn,more %O A262515 0,2 %A A262515 _Antti Karttunen_, Sep 26 2015 %E A262515 a(17)-a(30) from _Hiroaki Yamanouchi_, Oct 07 2015