Triangle T(n, k, q) = ((1-q)/(1-q^k))*c(n-1, q)*c(n, q)/(c(k-1,q)^2*c(n-k,q)*c(n-k+1, q)), where c(n, q) = Product_{j=1..n} (1-q^j) and q = 4, read by rows.
A172301
Triangle T(n, k, q) = ((1-q)/(1-q^k))*c(n-1, q)*c(n, q)/(c(k-1,q)^2*c(n-k,q)*c(n-k+1, q)), where c(n, q) = Product_{j=1..n} (1-q^j) and q = 4, read by rows.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =21a(5) =1a(6) =1a(7) =357a(8) =357a(9) =1a(10) =1a(11) =5797a(12) =98549a(13) =5797a(14) =1a(15) =1a(16) =93093a(17) =25698101a(18) =25698101a(19) =93093a(20) =1a(21) =1a(22) =1490853a(23) =6608951349a(24) =107316781429a(25) =6608951349a(26) =1490853a(27) =1a(28) =1a(29) =23859109
External references
- oeis: A172301