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

A173505

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =45a(8) =45a(9) =1a(10) =1a(11) =2835a(12) =42525a(13) =2835a(14) =1a(15) =1a(16) =722925a(17) =683164125a(18) =683164125a(19) =722925a(20) =1a(21) =1a(22) =739552275a(26) =739552275a(27) =1a(28) =1a(35) =1

External references