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A002060 formatted as a simple table:

n a(n)
6 4
7 60
8 550
9 4004
10 25480
11 148512
12 813960
13 4263600
14 18573816

[4,60,550,4004,25480,148512,813960,4263600,
 18573816]

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Last modified December 4 23:11 EST 2009. Contains 170347 sequences.


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