Irregular triangle T(n,k) = binomial(n-1,m-1)*m!*A036040(n,k), where m=A036043(n,k), read by rows, 1 <= k <= A000041(n).

A181417

Irregular triangle T(n,k) = binomial(n-1,m-1)*m!*A036040(n,k), where m=A036043(n,k), read by rows, 1 <= k <= A000041(n).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =12a(5) =6a(6) =1a(7) =24a(8) =18a(9) =108a(10) =24a(11) =1a(12) =40a(13) =80a(14) =360a(15) =540a(16) =960a(17) =120a(18) =1a(19) =60a(20) =150a(21) =100a(22) =900a(23) =3600a(24) =900a(25) =4800a(26) =10800a(27) =9000a(28) =720a(29) =1

External references