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 A075183 #8 Aug 08 2024 07:28:56 %S A075183 1,11,105,1020,10500,115920,1375920,17539200,239500800,3492720000, %T A075183 54226972800,893577484800,15583119552000,286816578048000, %U A075183 5557616064000000,113108602134528000,2412627824775168000 %N A075183 One half of third column of triangle A075181. %C A075183 Also one half of third diagonal of triangle A048594. %F A075183 a(n) = A075181(n+3, 2)/2 = A048594(n+3, n+1)/2, n>=0. %F A075183 a(n) = (n+1)!*S1(n+3, n+1)/2 with S1(n, m) := A008275(n, m) (Stirling1). %Y A075183 Cf. A008275, A048594, A075181. %K A075183 nonn,easy %O A075183 0,2 %A A075183 _Wolfdieter Lang_, Sep 19 2002