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A121788 as a simple table

n a(n)
1 2
2 2
3 32
4 104
5 10180
6 111712
7 67590888
8 2688307514
9 9628765945000
10 1445778936756068
11 29725924602729604016
12 17337631013706758184626
13 1998903003325610328086958408
14 4628650743368437273677525554148

[2,2,32,104,10180,111712,67590888,2688307514,
 9628765945000,1445778936756068,
 29725924602729604016,17337631013706758184626,
 1998903003325610328086958408,
 4628650743368437273677525554148]

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Last modified December 3 14:15 EST 2016. Contains 278745 sequences.