Triangular array associated with Schroeder numbers: T(0,0) = 1, T(n,0) = 0 for n > 0; T(n,k) = 0 if k < n; T(n,k) = T(n,k-1) + T(n-1,k-1) + T(n-1,k).
A106579
Triangular array associated with Schroeder numbers: T(0,0) = 1, T(n,0) = 0 for n > 0; T(n,k) = 0 if k < n; T(n,k) = T(n,k-1) + T(n-1,k-1) + T(n-1,k).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =1a(8) =4a(9) =6a(10) =0a(11) =1a(12) =6a(13) =16a(14) =22a(15) =0a(16) =1a(17) =8a(18) =30a(19) =68a(20) =90a(21) =0a(22) =1a(23) =10a(24) =48a(25) =146a(26) =304a(27) =394a(28) =0a(29) =1
External references
- oeis: A106579