Triangle read by rows, T(n, k) = ( ( 6 * Sum_{j=0..k+1} (-1)^j * binomial(n+1, j) * (k-j+1)^n ) - 4 * binomial(n-1, k) ) / 2.

A141696

Triangle read by rows, T(n, k) = ( ( 6 * Sum_{j=0..k+1} (-1)^j * binomial(n+1, j) * (k-j+1)^n ) - 4 * binomial(n-1, k) ) / 2.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =8a(5) =1a(6) =1a(7) =27a(8) =27a(9) =1a(10) =1a(11) =70a(12) =186a(13) =70a(14) =1a(15) =1a(16) =161a(17) =886a(18) =886a(19) =161a(20) =1a(21) =1a(22) =348a(23) =3543a(24) =7208a(25) =3543a(26) =348a(27) =1a(28) =1a(29) =727

External references