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 A136464 #9 Sep 08 2022 08:45:32
%S A136464 1,1,5,140,18278,10187344,23427955408,219523230207424,
%T A136464 8342151047514210800,1283165334094645437430016,
%U A136464 797992395974041544979314144000,2004526711813925600335978883389492224,20319947544434703948516669537695298775460352
%N A136464 C((n+1)*2^(n-1),n)/(n+1).
%F A136464 a(n) = A136463(n)/(n+1).
%p A136464 A136464:=n->binomial((n+1)*2^(n-1),n)/(n+1): seq(A136464(n), n=0..15); # _Wesley Ivan Hurt_, Nov 19 2014
%t A136464 Table[Binomial[(n + 1)*2^(n - 1), n]/(n + 1), {n, 0, 15}] (* _Wesley Ivan Hurt_, Nov 19 2014 *)
%o A136464 (PARI) a(n)=binomial((n+1)*2^(n-1),n)/(n+1)
%o A136464 (Magma) [1] cat [(Binomial((n+1)*2^(n-1), n))/(n+1): n in [1..15]]; // _Vincenzo Librandi_, Nov 20 2014
%Y A136464 Cf. A136463, A136462.
%K A136464 nonn,easy
%O A136464 0,3
%A A136464 _Paul D. Hanna_, Dec 31 2007
%E A136464 a(12) from _Vincenzo Librandi_, Nov 20 2014