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 A076181 #14 May 05 2025 01:36:57 %S A076181 1,1,56,375375,577185873264,337143653615801672640, %T A076181 112387296492020598351382561996800, %U A076181 30035919199125011172228882156381540400453089375,8612584407483201348696124216860807740603132996062773468500000000 %N A076181 a(n) = (n^2)!/(n!)^(n+1)/(2n-1). %H A076181 Amiram Eldar, <a href="/A076181/b076181.txt">Table of n, a(n) for n = 1..27</a> %t A076181 a[n_] := (n^2)!/n!^(n+1)/(2*n-1); Array[a, 10] (* _Amiram Eldar_, May 05 2025 *) %Y A076181 Cf. A088020. %K A076181 nonn %O A076181 1,3 %A A076181 _Benoit Cloitre_, Nov 01 2002