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A063026 as a simple table

n a(n)
0 0
1 1
2 1
3 2
4 4
5 9
6 21
7 52
8 135
9 368
10 1045
11 3068
12 9230
13 28245
14 87414
15 272544
16 854012
17 2685897
18 8473107
19 26805994
20 85045674
21 270599945
22 863529480
23 2763745020
24 8870777955
25 28550721966
26 92128996782
27 298004209496
28 966085311052

[0,1,1,2,4,9,21,52,135,368,1045,3068,9230,28245,
 87414,272544,854012,2685897,8473107,26805994,
 85045674,270599945,863529480,2763745020,
 8870777955,28550721966,92128996782,298004209496,
 966085311052]

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Last modified January 22 05:19 EST 2022. Contains 350481 sequences. (Running on oeis4.)