Triangle T(n,k) defined by: T(0,0)=1, T(n,k)=0 if k < 0 or k > n, T(n,k) = T(n-1,k-1) + k*T(n-1,k) + Sum_{j>=1} T(n-1,k+j).

A116155

Triangle T(n,k) defined by: T(0,0)=1, T(n,k)=0 if k < 0 or k > n, T(n,k) = T(n-1,k-1) + k*T(n-1,k) + Sum_{j>=1} T(n-1,k+j).

Terms

    a(0) =1a(1) =0a(2) =1a(3) =1a(4) =1a(5) =1a(6) =2a(7) =3a(8) =3a(9) =1a(10) =7a(11) =9a(12) =10a(13) =6a(14) =1a(15) =26a(16) =33a(17) =36a(18) =29a(19) =10a(20) =1a(21) =109a(22) =135a(23) =145a(24) =134a(25) =70a(26) =15a(27) =1a(28) =500a(29) =609

External references