1012664

Appears in sequences

• Central octonomial coefficients: largest coefficient of (1+x+...+x^7)^n.at n=8A025013
• Doubly restricted composition numbers: number of compositions of 1+2+3+...+n = n(n+1)/2 into exactly n positive integers each no more than n.at n=8A077045
• 151*n^7/315+2*n^5/9+7*n^3/45+n/7.at n=8A229735
• 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).at n=40A329020
• a(n) is the constant term in the expansion of ( Sum_{k=1..n} x_k^(2*k-1) + x_k^(-(2*k-1)) )^(2*n).at n=4A329021