954437292

Appears in sequences

• Number of circulant tournaments on 2n+1 nodes up to Cayley isomorphism.at n=35A002086
• Number of nonisomorphic circulant tournaments, i.e., Cayley tournaments for cyclic group of order 2n-1.at n=36A049288
• Number of subsets of {1,2,3,...,n} that sum to 0 mod 18.at n=34A068039
• Number of binary vectors (x_1,...x_(n-1)) satisfying Sum_{i=1..n-1} (-1)^i*i*x_i = 0 (mod n).at n=34A114702
• a(n) = A000016(2*n).at n=18A300668