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A181926 as a simple table

n a(n)
0 1
1 1
2 2
3 2
4 4
5 6
6 13
7 27
8 70
9 191
10 609
11 2130
12 8526
13 38156
14 194000
15 1109673
16 7176149
17 52238676
18 429004471
19 3970438003
20 41454181730
21 488046132076
22 6482590679282
23 97134793638750
24 1641654359781521
25 31285014253070731
26 672372121341768918
27 16299021330860540657

[1,1,2,2,4,6,13,27,70,191,609,2130,8526,38156,
 194000,1109673,7176149,52238676,429004471,
 3970438003,41454181730,488046132076,6482590679282,
 97134793638750,1641654359781521,31285014253070731,
 672372121341768918,16299021330860540657]

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Last modified February 23 14:59 EST 2020. Contains 332165 sequences. (Running on oeis4.)