Square array read by ascending antidiagonals: T(n,k) = (2*k)!/k!^2 * ( (2*n*k)! * ((n + 2)*k)! )/( (n*k)! * ((n + 1)*k)!^2 ) for n, k > = 0.
A364509
Square array read by ascending antidiagonals: T(n,k) = (2*k)!/k!^2 * ( (2*n*k)! * ((n + 2)*k)! )/( (n*k)! * ((n + 1)*k)!^2 ) for n, k > = 0.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =1a(4) =6a(5) =36a(6) =1a(7) =16a(8) =90a(9) =400a(10) =1a(11) =50a(12) =784a(13) =1680a(14) =4900a(15) =1a(16) =168a(17) =8910a(18) =48400a(19) =34650a(20) =63504a(21) =1a(22) =588a(23) =113256a(24) =2011100a(25) =3312400a(26) =756756a(27) =853776a(28) =1a(29) =2112
External references
- oeis: A364509