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

A155908

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =6a(5) =1a(6) =1a(7) =27a(8) =27a(9) =1a(10) =1a(11) =156a(12) =262a(13) =156a(14) =1a(15) =1a(16) =1375a(17) =2560a(18) =2560a(19) =1375a(20) =1a(21) =1a(22) =16998a(23) =33303a(24) =34052a(25) =33303a(26) =16998a(27) =1a(28) =1a(29) =262591

External references