418503

Appears in sequences

• a(n) = 2n*a(n-1) + 1 with a(0)=0.at n=7A056541
• Number of ordered solutions to x+y+z = u+v+w, 0 <= x, y, z, u, v, w < n.at n=14A071816
• Elements of A011185 that are also the sum of a pair of distinct elements of A011185.at n=33A133605
• Number of arrays of n integers in -7..7 with sum zero.at n=6A201551
• Number of arrays of 6 integers in -n..n with sum zero.at n=7A201553