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A217275 as a simple table

n a(n)
0 1
1 1
2 8
3 22
4 141
5 561
6 3291
7 15583
8 88691
9 459187
10 2599570
11 14136200
12 80391235
13 450046143
14 2579291352
15 14710321998
16 85002979083
17 491050703739
18 2859262171872
19 16674374605722
20 97747766045679
21 574231140306699
22 3385974360904227
23 20009363692187115
24 118582649963026677

[1,1,8,22,141,561,3291,15583,88691,459187,2599570,
 14136200,80391235,450046143,2579291352,
 14710321998,85002979083,491050703739,
 2859262171872,16674374605722,97747766045679,
 574231140306699,3385974360904227,
 20009363692187115,118582649963026677]

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Last modified February 20 12:28 EST 2018. Contains 299379 sequences. (Running on oeis4.)