Triangle T(n, k) = round(c(n)/(c(k)*c(n-k))) where c(n) = ((n-1)! * n! * (n+1)!)/ 2^(n-1) if n >= 2, otherwise 1, read by rows.

A174150

Triangle T(n, k) = round(c(n)/(c(k)*c(n-k))) where c(n) = ((n-1)! * n! * (n+1)!)/ 2^(n-1) if n >= 2, otherwise 1, read by rows.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =6a(5) =1a(6) =1a(7) =12a(8) =12a(9) =1a(10) =1a(11) =30a(12) =60a(13) =30a(14) =1a(15) =1a(16) =60a(17) =300a(18) =300a(19) =60a(20) =1a(21) =1a(22) =105a(23) =1050a(24) =2625a(25) =1050a(26) =105a(27) =1a(28) =1a(29) =168

External references