Triangular array: T(n,k) = sqrt(C(n-1,k-1)*C(n-1,k)*C(n,k+1)* C(n+1,k+1)*C(n+1,k)*C(n,k-1)), where C(n,k) = binomial(n,k).
A197208
Triangular array: T(n,k) = sqrt(C(n-1,k-1)*C(n-1,k)*C(n,k+1)* C(n+1,k+1)*C(n+1,k)*C(n,k-1)), where C(n,k) = binomial(n,k).
Terms
- a(0) =3a(1) =12a(2) =12a(3) =30a(4) =120a(5) =30a(6) =60a(7) =600a(8) =600a(9) =60a(10) =105a(11) =2100a(12) =5250a(13) =2100a(14) =105a(15) =168a(16) =5880a(17) =29400a(18) =29400a(19) =5880a(20) =168a(21) =252a(22) =14112a(23) =123480a(24) =246960a(25) =123480a(26) =14112a(27) =252a(28) =360a(29) =30240
External references
- oeis: A197208