Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) is the constant term in the expansion of ( Sum_{j=1..k} x_j^(2*j-1) + x_j^(-(2*j-1)) )^(2*n).
A329020
Square array T(n,k), n>=0, k>=0, read by antidiagonals, where T(n,k) is the constant term in the expansion of ( Sum_{j=1..k} x_j^(2*j-1) + x_j^(-(2*j-1)) )^(2*n).
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =2a(5) =0a(6) =1a(7) =4a(8) =6a(9) =0a(10) =1a(11) =6a(12) =44a(13) =20a(14) =0a(15) =1a(16) =8a(17) =146a(18) =580a(19) =70a(20) =0a(21) =1a(22) =10a(23) =344a(24) =4332a(25) =8092a(26) =252a(27) =0a(28) =1a(29) =12
External references
- oeis: A329020