Triangle T(n, k, q) = c(n, q)/(c(k, q)*c(n-k, q)), where c(n, q) = Product_{j=1..n} t(2*j, q), t(n, q) = (1/4)*( (2 + sqrt(q))^n + (2 - sqrt(q))^n - 2 ), and q = 3, read by rows.

A173585

Triangle T(n, k, q) = c(n, q)/(c(k, q)*c(n-k, q)), where c(n, q) = Product_{j=1..n} t(2*j, q), t(n, q) = (1/4)*( (2 + sqrt(q))^n + (2 - sqrt(q))^n - 2 ), and q = 3, read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =16a(5) =1a(6) =1a(7) =225a(8) =225a(9) =1a(10) =1a(11) =3136a(12) =44100a(13) =3136a(14) =1a(15) =1a(16) =43681a(17) =8561476a(18) =8561476a(19) =43681a(20) =1a(21) =1a(22) =608400a(23) =1660970025a(24) =23150231104a(25) =1660970025a(26) =608400a(27) =1a(28) =1a(29) =8473921

External references