Triangle read by rows, T(n,k) = RF(n-k+1,n-k)*S2(n,k) where RF denotes the rising factorial and S2 the Stirling set numbers, for n>=0 and 0<=k<=n.

A268435

Triangle read by rows, T(n,k) = RF(n-k+1,n-k)*S2(n,k) where RF denotes the rising factorial and S2 the Stirling set numbers, for n>=0 and 0<=k<=n.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =0a(4) =2a(5) =1a(6) =0a(7) =12a(8) =6a(9) =1a(10) =0a(11) =120a(12) =84a(13) =12a(14) =1a(15) =0a(16) =1680a(17) =1800a(18) =300a(19) =20a(20) =1a(21) =0a(22) =30240a(23) =52080a(24) =10800a(25) =780a(26) =30a(27) =1a(28) =0a(29) =665280

External references