71582944
domain: N
Appears in sequences
- Number of n-bead necklaces with 4 colors.at n=15A001868
- An intermediate sequence for nonisomorphic circulant undirected p^2-graphs, indexed by odd primes p.at n=9A038783
- Number of subsets of {1,2,3,...,n} that sum to 0 mod 15.at n=30A068036
- Number of distinct n X 3 toroidal 0..3 arrays.at n=4A184274
- Number of distinct n X 5 toroidal 0..3 arrays.at n=2A184276
- Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..3 arrays.at n=23A184277
- Table read by antidiagonals: T(n,k) = number of distinct n X k toroidal 0..3 arrays.at n=25A184277
- a(n) = -(1/n) * Sum_{d|n} phi(n/d) * (-4)^d.at n=14A343466