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A100133 as a simple table

n a(n)
0 1
1 2
2 4
3 8
4 19
5 50
6 136
7 368
8 985
9 2618
10 6940
11 18392
12 48763
13 129338
14 343120
15 910304
16 2415025
17 6406898
18 16996852
19 45090728
20 119620579
21 317340098
22 841868632
23 2233386320
24 5924932489
25 15718204970
26 41698695820
27 110622122360

[1,2,4,8,19,50,136,368,985,2618,6940,18392,48763,
 129338,343120,910304,2415025,6406898,16996852,
 45090728,119620579,317340098,841868632,2233386320,
 5924932489,15718204970,41698695820,110622122360]

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Last modified December 3 12:16 EST 2021. Contains 349462 sequences. (Running on oeis4.)