399472

Appears in sequences

• Number of nonisomorphic circulant self-complementary directed p^2-graphs, indexed by odd primes p.at n=2A038785
• Number of nonisomorphic circulant p^2-tournaments, indexed by odd primes p.at n=2A038789
• Number of nonisomorphic circulant tournaments, i.e., Cayley tournaments for cyclic group of order 2n-1.at n=24A049288
• Number of subsets of {1,2,3,...,n} that sum to 0 mod 21.at n=23A068042
• G.f. satisfies A(x) = 1 + x*A(x)*(1 + x^4*A(x)^2).at n=23A365252