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A073351
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n^2(n+1)(2n+1)^2(7n+1)/36.
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0
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0, 4, 125, 1078, 5220, 18150, 50869, 122500, 263568, 519840, 956725, 1664234, 2762500, 4407858, 6799485, 10186600, 14876224, 21241500, 29730573, 40876030, 55304900, 73749214, 97057125, 126204588, 162307600, 206635000, 260621829
(list; graph; refs; listen; history; internal format)
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