Triangle read by rows: T(n, k) = (k + 1)*T(n-1, k) + Sum_{j=k..n-1} T(n-1, j) for k < n, T(n, n) = 1. T(n, k) for n >= 0 and 0 <= k <= n.
A242431
Triangle read by rows: T(n, k) = (k + 1)*T(n-1, k) + Sum_{j=k..n-1} T(n-1, j) for k < n, T(n, n) = 1. T(n, k) for n >= 0 and 0 <= k <= n.
Terms
- a(0) =1a(1) =2a(2) =1a(3) =5a(4) =3a(5) =1a(6) =14a(7) =10a(8) =4a(9) =1a(10) =43a(11) =35a(12) =17a(13) =5a(14) =1a(15) =144a(16) =128a(17) =74a(18) =26a(19) =6a(20) =1a(21) =523a(22) =491a(23) =329a(24) =137a(25) =37a(26) =7a(27) =1a(28) =2048a(29) =1984
External references
- oeis: A242431