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A150849 as a simple table

n a(n)
0 1
1 2
2 8
3 32
4 140
5 624
6 2835
7 13067
8 60938
9 286498
10 1356904
11 6459691
12 30892611
13 148291664
14 714120564
15 3448426056
16 16692404388
17 80968662585
18 393478911192
19 1915279956230
20 9336406678901
21 45571836417430
22 222704732448507
23 1089503921232924
24 5335248476500528
25 26149843216648124
26 128274792913583856

[1,2,8,32,140,624,2835,13067,60938,286498,1356904,
 6459691,30892611,148291664,714120564,3448426056,
 16692404388,80968662585,393478911192,
 1915279956230,9336406678901,45571836417430,
 222704732448507,1089503921232924,5335248476500528,
 26149843216648124,128274792913583856]

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Last modified January 23 17:33 EST 2022. Contains 350514 sequences. (Running on oeis4.)