General q-Narayana triangle sequence: T(n, k) = Product_{j=0..2} ( q_binomial(n+j, j+k, 2)/q_binomial(n+j-k, j, 2) ).

A156939

General q-Narayana triangle sequence: T(n, k) = Product_{j=0..2} ( q_binomial(n+j, j+k, 2)/q_binomial(n+j-k, j, 2) ).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =15a(5) =1a(6) =1a(7) =155a(8) =155a(9) =1a(10) =1a(11) =1395a(12) =14415a(13) =1395a(14) =1a(15) =1a(16) =11811a(17) =1098423a(18) =1098423a(19) =11811a(20) =1a(21) =1a(22) =97155a(23) =76499847a(24) =688498623a(25) =76499847a(26) =97155a(27) =1a(28) =1a(29) =788035

External references