273988

Appears in sequences

• Triangle of central factorial numbers 4^k T(2n+1, 2n+1-2k).at n=24A008958
• Triangle of scaled central factorial numbers, T(n,k) = A008958(n,n-k).at n=24A160562
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = (2*n+k)!/k! * [x^(2*n+k)] sinh(x)^k.at n=58A381512
• Expansion of 1/((1-x) * (1-9*x) * (1-25*x) * (1-49*x)).at n=3A381513