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A054773
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Number of nonnegative integer 4 X 4 matrices with sum of elements equal to n, up to rotational symmetry.
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0
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1, 4, 36, 204, 980, 3876, 13596, 42636, 122666, 326876, 817388, 1931540, 4346404, 9360540, 19390548, 38779380, 75136675, 141430680, 259292440, 463991880, 811990680, 1391975640, 2341057896, 3867821640, 6285222804, 10056336264
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