Triangular array T(n,k) = k Sum_{j=0..k-1} (-1)^j binomial(k-1,j) (n-1-j)^(n-1), 1<=k<=n, read by rows.

A281485

Triangular array T(n,k) = k Sum_{j=0..k-1} (-1)^j binomial(k-1,j) (n-1-j)^(n-1), 1<=k<=n, read by rows.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =4a(4) =6a(5) =6a(6) =27a(7) =38a(8) =36a(9) =24a(10) =256a(11) =350a(12) =330a(13) =240a(14) =120a(15) =3125a(16) =4202a(17) =3960a(18) =3000a(19) =1800a(20) =720a(21) =46656a(22) =62062a(23) =58506a(24) =45360a(25) =29400a(26) =15120a(27) =5040a(28) =823543a(29) =1087214

External references