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A180154 as a simple table

n a(n)
2 2
3 4
4 8
5 36
6 160
7 848
8 5792
9 41712
10 338688
11 2902464
12 30968064
13 346316544
14 4034119680
15 48892557312
16 707976364032 

[2,4,8,36,160,848,5792,41712,338688,2902464,
 30968064,346316544,4034119680,48892557312,
 707976364032]

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Last modified May 31 19:33 EDT 2024. Contains 373003 sequences. (Running on oeis4.)