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A005355 as a simple table

n a(n)
0 0
1 1
2 1
3 1
4 3
5 7
6 21
7 61
8 187
9 577
10 1825
11 5831
12 18883
13 61699
14 203429
15 675545
16 2258291
17 7592249
18 25656477
19 87096661
20 296891287
21 1015797379
22 3487272317
23 12008898531
24 41471260883
25 143588078449
26 498343911529
27 1733410858955
28 6041795275027
29 21098924740155

[0,1,1,1,3,7,21,61,187,577,1825,5831,18883,61699,
 203429,675545,2258291,7592249,25656477,87096661,
 296891287,1015797379,3487272317,12008898531,
 41471260883,143588078449,498343911529,
 1733410858955,6041795275027,21098924740155]

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Last modified May 9 07:36 EDT 2021. Contains 343692 sequences. (Running on oeis4.)