Triangle read by rows, T(n,k) = sum(j=0..k-1, S(n+1,j+1)*S(n,k-j)) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n.

A254881

Triangle read by rows, T(n,k) = sum(j=0..k-1, S(n+1,j+1)*S(n,k-j)) where S denotes the Stirling cycle numbers A132393, T(0,0)=1, n>=0, 0<=k<=2n.

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =0a(5) =2a(6) =5a(7) =4a(8) =1a(9) =0a(10) =12a(11) =40a(12) =51a(13) =31a(14) =9a(15) =1a(16) =0a(17) =144a(18) =564a(19) =904a(20) =769a(21) =376a(22) =106a(23) =16a(24) =1a(25) =0a(26) =2880a(27) =12576a(28) =23300a(29) =24080

External references