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 A177410 #6 Feb 01 2018 03:31:31
%S A177410 1,2,22,1240,316316,343855008,1551088459936,28684932916796288,
%T A177410 2161788213413182113760,661624062463590275090838016,
%U A177410 820418024446932078541699530057216
%N A177410 a(n) = binomial((n+1)*2^n, n)/(n+1).
%F A177410 a(n) = [x^n] (1 + x)^((n+1)*2^n)/(n+1).
%F A177410 a(n) = [x^n] Sum_{k=0..n} (n+1)^(k-1) * log(1 + 2^k*x)^k/k!. - _Paul D. Hanna_, Jul 03 2010
%o A177410 (PARI) {a(n)=binomial((n+1)*2^n,n)/(n+1)}
%o A177410 (PARI) {a(n)=polcoeff(sum(k=0, n, (n+1)^(k-1)*log(1+2^k*x +x*O(x^n))^k/k!), n)} \\ _Paul D. Hanna_, Jul 03 2010
%Y A177410 Cf. A177411, A177400.
%K A177410 nonn
%O A177410 0,2
%A A177410 _Paul D. Hanna_, Jun 26 2010