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 A027491 #7 Jan 20 2019 07:53:27 %S A027491 1,126,22535,6139575,2487385684,1446119232796,1166500896454844, %T A027491 1267622549125064100,1809397702962603426816,3319681647209765132077992, %U A027491 7683477487469739839805775776,22073571178683618465281583731376 %N A027491 Third column of Triangle A027478, constructed from the Stirling numbers of the first kind. %F A027491 a(n) = A027478(n,3) %Y A027491 Cf. A027478 (Cube of the normalized Stirling matrix of the first kind). %K A027491 nonn,easy %O A027491 3,2 %A A027491 _Olivier Gérard_