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 A134280 #12 Aug 29 2019 16:38:39 %S A134280 1,6,1,66,6,1,1056,102,6,1,22176,1452,102,6,1,576576,32868,1668,102,6, %T A134280 1,17873856,779328,35244,1668,102,6,1,643458816,23912064,843480,36540, %U A134280 1668,102,6,1,26381811456,812173824,25416072,857736,36540,1668,102,6,1 %N A134280 Triangle of numbers obtained from the partition array A134279. %C A134280 This triangle is named S2(6)'. %C A134280 In the same manner the unsigned Lah triangle A008297 is obtained from the partition array A130561. %H A134280 W. Lang, <a href="/A134280/a134280.txt">First 10 rows and more. </a> %F A134280 a(n,m)=sum(product(S2(6;j,1)^e(n,m,k,j),j=1..n),k=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,k,j) is the exponent of j in the k-th m part partition of n. S2(6;j,1) = A049385(n,1) = A008548(n) = (5*n-4)(!^5)(quintuple- or 5-factorials). %e A134280 [1]; [6,1]; [66,6,1]; [1056,102,6,1]; [22176,1452,102,6,1]; ... %Y A134280 Cf. A134275 (S2(5)'). %Y A134280 Cf. A134281 (row sums). %Y A134280 Cf. A134282 (alternating row sums). %K A134280 nonn,easy,tabl %O A134280 1,2 %A A134280 _Wolfdieter Lang_, Nov 13 2007