Square array T(n,k) = [x^n] ((1+x)^(k+1) / (1-x)^(k-1))^n, n>=0, k>=0, read by descending antidiagonals.
A330843
Square array T(n,k) = [x^n] ((1+x)^(k+1) / (1-x)^(k-1))^n, n>=0, k>=0, read by descending antidiagonals.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =2a(5) =-2a(6) =1a(7) =4a(8) =6a(9) =0a(10) =1a(11) =6a(12) =30a(13) =20a(14) =6a(15) =1a(16) =8a(17) =70a(18) =256a(19) =70a(20) =0a(21) =1a(22) =10a(23) =126a(24) =924a(25) =2310a(26) =252a(27) =-20a(28) =1a(29) =12
External references
- oeis: A330843