317728domain: NAppears in sequencesExpansion of (f(q) * f(q^3) / (f(-q) * f(-q^3)))^2 in powers of q where f() is a Ramanujan theta function.at n=23A123861Number of 2-colorings of an 4 X 4 X 4 grid, up to rotational symmetry, by the number of black cells.at n=5A386554