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A200468 as a simple table

n a(n)
1 8
2 36
3 164
4 750
5 3434
6 15446
7 69136
8 309748
9 1386973
10 6207948
11 27781867
12 124317636
13 556310068
14 2489502301
15 11140314293
16 49852273554
17 223086037878
18 998302588120
19 4467360525658
20 19991251154656
21 89460006607948
22 400329985806851

[8,36,164,750,3434,15446,69136,309748,1386973,
 6207948,27781867,124317636,556310068,2489502301,
 11140314293,49852273554,223086037878,998302588120,
 4467360525658,19991251154656,89460006607948,
 400329985806851]

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Last modified November 29 21:32 EST 2021. Contains 349416 sequences. (Running on oeis4.)