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 A174462 #8 Jan 15 2019 07:59:20
%S A174462 1,5,10,53,26,662,50,5749,7138,65630,122,1151702,170,11787102,9225260,
%T A174462 168963957,290,2709216086,362,34398664078,13522807742,497634360470,
%U A174462 530,7871610432598,2822797526,108172480466302,21966337136980
%N A174462 a(n) = Sum_{d|n} binomial(n,d)^2.
%C A174462 Analog to the central binomial coefficients: A000984(n) = Sum_{k=0..n} C(n,k)^2.
%H A174462 Seiichi Manyama, <a href="/A174462/b174462.txt">Table of n, a(n) for n = 1..1667</a>
%F A174462 Logarithmic derivative of A174461.
%o A174462 (PARI) {a(n)=sumdiv(n,d,binomial(n,d)^2)}
%Y A174462 Cf. A056045, A174461.
%K A174462 nonn
%O A174462 1,2
%A A174462 _Paul D. Hanna_, Apr 04 2010