Triangle T(n,k) read by rows: T(n,k) = (k-1)*T(n-1,k) + (n-k+2)*T(n-1, k-1), with T(n,1)=1, for 1 <= k <= n, n >= 1.
A157011
Triangle T(n,k) read by rows: T(n,k) = (k-1)*T(n-1,k) + (n-k+2)*T(n-1, k-1), with T(n,1)=1, for 1 <= k <= n, n >= 1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =5a(5) =4a(6) =1a(7) =9a(8) =23a(9) =8a(10) =1a(11) =14a(12) =82a(13) =93a(14) =16a(15) =1a(16) =20a(17) =234a(18) =607a(19) =343a(20) =32a(21) =1a(22) =27a(23) =588a(24) =2991a(25) =3800a(26) =1189a(27) =64a(28) =1a(29) =35
External references
- oeis: A157011