317856domain: NAppears in sequencesa(n) = prime(prime(prime(prime(A028815(n) - 1) - 1) - 1) - 1) - 1.at n=23A141132Number of chiral pairs of colorings of the 8 triangular faces of a regular octahedron or the 8 vertices of a cube using n or fewer colors.at n=7A337896