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A057003
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Write the natural numbers in groups: 1; 2,3; 4,5,6; 7,8,9,10; ... and multiple the members of each group.
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5
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1, 6, 120, 5040, 360360, 39070080, 5967561600, 1220096908800, 321570878428800, 106137499051584000, 42873948150095462400, 20803502274492921984000, 11938961126118491232768000, 7998487694738166709923840000
(list; graph; refs; listen; history; internal format)
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