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 A214441 #5 May 27 2013 08:54:06
%S A214441 1,1,14,4862,35357670,4861946401452,11959798385860453492,
%T A214441 509552245179617138054608572,368479169875816659479009042713546950,
%U A214441 4462290049988320482463241297506133183499654740,896519947090131496687170070074100632420837521538745909320
%N A214441 Catalan numbers at square positions: a(n) = A000108(n^2).
%F A214441 a(n) = binomial(2*n^2, n^2) / (n^2 + 1).
%t A214441 CatalanNumber[Range[0,10]^2] (* _Harvey P. Dale_, May 27 2013 *)
%o A214441 (PARI) {a(n)=binomial(2*n^2,n^2)/(n^2+1)}
%o A214441 for(n=0,15,print1(a(n),", "))
%Y A214441 Cf. A135758, A201555.
%K A214441 nonn
%O A214441 0,3
%A A214441 _Paul D. Hanna_, Jul 17 2012