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 A263276 #9 Nov 09 2015 16:15:01 %S A263276 0,21,24,8504,9860,28022,28171,106666,106957,1301664,1310231,2736338, %T A263276 2740428,8770047,8829795,333863896,333959486 %N A263276 Positions of squares in A259934. %C A263276 Numbers n for which A259934(n) is a perfect square. Indexing begins from zero, because a(0) = 0 is a special case. %C A263276 Terms were computed from the data file of A259934 provided by _Max Alekseyev_, which contained terms up to A259934(397420670) = 9999999974. %F A263276 a(n) = A262694(A262514(n)). %o A263276 (Scheme) (define (A263276 n) (A262694 (A262514 n))) %Y A263276 Cf. A259934, A262514, A262694. %Y A263276 Cf. A263277 (first differences). %K A263276 nonn,more %O A263276 0,2 %A A263276 _Antti Karttunen_, Nov 08 2015