Triangle, read by rows, defined by: T(n,k) = (k+1)*T(n,k+1) - Sum_{j=1..n-k-1} T(j,0)*T(n,j+k+1) for n>k with T(n,n)=1 for n>=0.

A117396

Triangle, read by rows, defined by: T(n,k) = (k+1)*T(n,k+1) - Sum_{j=1..n-k-1} T(j,0)*T(n,j+k+1) for n>k with T(n,n)=1 for n>=0.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =3a(9) =1a(10) =1a(11) =17a(12) =11a(13) =4a(14) =1a(15) =1a(16) =77a(17) =51a(18) =19a(19) =5a(20) =1a(21) =1a(22) =437a(23) =291a(24) =109a(25) =29a(26) =6a(27) =1a(28) =1a(29) =2957

External references