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 = 2, read by rows.
A173503
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 = 2, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =21a(12) =63a(13) =21a(14) =1a(15) =1a(16) =315a(17) =6615a(18) =6615a(19) =315a(20) =1a(21) =1a(22) =9765a(23) =3075975a(24) =21531825a(25) =3075975a(26) =9765a(27) =1a(28) =1a(29) =615195
External references
- oeis: A173503