Triangle read by rows: T(n, k) = (-1)^(n + k)*2*binomial(2*k - 1, n)* binomial(2*n + 1, 2*k) for k > 0, and k^n for k = 0.
A368846
Triangle read by rows: T(n, k) = (-1)^(n + k)*2*binomial(2*k - 1, n)* binomial(2*n + 1, 2*k) for k > 0, and k^n for k = 0.
Terms
- a(0) =1a(1) =0a(2) =6a(3) =0a(4) =0a(5) =30a(6) =0a(7) =0a(8) =-70a(9) =140a(10) =0a(11) =0a(12) =0a(13) =-840a(14) =630a(15) =0a(16) =0a(17) =0a(18) =924a(19) =-6930a(20) =2772a(21) =0a(22) =0a(23) =0a(24) =0a(25) =18018a(26) =-48048a(27) =12012a(28) =0a(29) =0
External references
- oeis: A368846