Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + ((n+1)^2*(n+2)^2*(2*n^2 +6*n +3)/12)*T(n-2, k-1), read by rows.

A154231

Triangle T(n, k) = T(n-1, k) + T(n-1, k-1) + ((n+1)^2*(n+2)^2*(2*n^2 +6*n +3)/12)*T(n-2, k-1), read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =278a(5) =1a(6) =1a(7) =1579a(8) =1579a(9) =1a(10) =1a(11) =6005a(12) =1233308a(13) =6005a(14) =1a(15) =1a(16) =18207a(17) =20504692a(18) =20504692a(19) =18207a(20) =1a(21) =1a(22) =47216a(23) =194715939a(24) =35816807848a(25) =194715939a(26) =47216a(27) =1a(28) =1a(29) =108993

External references