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A132813 Triangle read by rows: A001263 * A127648 as infinite lower triangular matrices. +0
4
1, 1, 2, 1, 6, 3, 1, 12, 18, 4, 1, 20, 60, 40, 5, 1, 30, 150, 200, 75, 6, 1, 42, 315, 700, 525, 126, 7, 1, 56, 588, 1960, 2450, 1176, 196, 8, 1, 72, 1008, 4704, 8820, 7056, 2352, 288, 9, 1, 90, 1620, 10080, 26460, 31752, 17640, 4320, 405, 10 (list; table; graph; listen)
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Last modified December 4 15:11 EST 2009. Contains 170347 sequences.


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