2630044domain: NAppears in sequencesNumber of nonnegative integer 3 X 3 matrices with sum of elements equal to n, up to rotational symmetry.at n=24A054771Number of n-member subsets of [4*n] whose elements sum to a multiple of four.at n=8A318592Number of 8-member subsets of [8*n] whose elements sum to a multiple of n.at n=4A318629