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A009725 as a simple table

n a(n)
0 0
1 1
2 2
3 2
4 8
5 16
6 96
7 272
8 2176
9 7936
10 79360
11 353792
12 4245504
13 22368256
14 313155584
15 1903757312
16 30460116992
17 209865342976
18 3777576173568
19 29088885112832
20 581777702256640
21 4951498053124096
22 108932957168730112
23 1015423886506852352
24 24370173276164456448

[0,1,2,2,8,16,96,272,2176,7936,79360,353792,
 4245504,22368256,313155584,1903757312,30460116992,
 209865342976,3777576173568,29088885112832,
 581777702256640,4951498053124096,
 108932957168730112,1015423886506852352,
 24370173276164456448]

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Last modified October 19 16:28 EDT 2018. Contains 316366 sequences. (Running on oeis4.)