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A051606
(3*n+6)!!!/6!!!, related to
A032031
((3*n)!!! triple factorials).
+0
3
1, 9, 108, 1620, 29160, 612360, 14696640, 396809280, 11904278400, 392841187200, 14142282739200, 551549026828800, 23165059126809600, 1042427660706432000, 50036527713908736000, 2551862913409345536000, 137800597324104658944000
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Maintained by
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Last modified December 17 13:29 EST 2009. Contains 170826 sequences.
AT&T Labs Research
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