1686896640

Appears in sequences

• Expansion of (-1 + 1/(1-8*x)^8)/(64*x); related to A053107.at n=7A053111
• Central terms of triangle A249307.at n=17A249308
• a(n) = 2^n*n!/(floor(n/2)!)^2.at n=15A253665
• a(n) = max{A380114(n, k) : k = 0..n}.at n=17A380115