381304

Appears in sequences

• Number of n-bead necklaces with 4 colors.at n=11A001868
• An intermediate sequence for nonisomorphic circulant undirected p^2-graphs, indexed by odd primes p.at n=7A038783
• Number of complementary pairs of circulant graphs on n nodes.at n=45A054929
• Number of subsets of {1,2,3,...,n} that sum to 0 mod 11.at n=22A068032
• a(n) = Sum_{j=1..n*(n-1)} (n*j mod (n+j)).at n=32A309341
• a(n) = -(1/n) * Sum_{d|n} phi(n/d) * (-4)^d.at n=10A343466