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 A027490 #7 Jan 20 2019 07:53:33 %S A027490 1,39,2951,407450,94128364,33910601508,18030534782364, %T A027490 13546779499777104,13886615636338251456,18871622607827176957440, %U A027490 33195072622146083265245760,74062306101954993414777244800 %N A027490 Second column of Triangle A027478, constructed from the Stirling numbers of the first kind. %F A027490 a(n) = A027478(n,2) %Y A027490 Cf. A027478 (Cube of normalized Stirling matrix of the first kind). %K A027490 nonn,easy %O A027490 2,2 %A A027490 _Olivier Gérard_