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 A134151 #10 Aug 28 2019 17:36:31 %S A134151 1,4,1,28,4,1,280,44,4,1,3640,392,44,4,1,58240,5544,456,44,4,1, %T A134151 1106560,80640,5992,456,44,4,1,24344320,1519840,88256,6248,456,44,4,1, %U A134151 608608000,31420480,1631392,90048,6248,456,44,4,1,17041024000,766525760,33293120 %N A134151 Triangle of numbers obtained from the partition array A134150. %C A134151 This triangle is named S2(4)'. %C A134151 In the same manner the unsigned Lah triangle A008297 is obtained from the partition array A130561. %H A134151 W. Lang, <a href="/A134151/a134151.txt">First 10 rows and more</a>. %F A134151 a(n,m)=sum(product(S2(4;j,1)^e(n,m,q,j),j=1..n),q=1..p(n,m)) if n>=m>=1, else 0. Here p(n,m)=A008284(n,m), the number of m parts partitions of n and e(n,m,q,j) is the exponent of j in the q-th m part partition of n. S2(4;j,1)= A007559(j) = A035469(j,1) = (3*j-2)!!!. %e A134151 [1]; [4,1]; [28,4,1]; [280,44,4,1]; [3640,392,44,4,1];... %Y A134151 Cf. A134152 (row sums). A134272 (alternating row sums). %Y A134151 Cf. A134146 (S2(3)' triangle). %K A134151 nonn,easy,tabl %O A134151 1,2 %A A134151 _Wolfdieter Lang_ Nov 13 2007