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A001011 as a simple table

n a(n)
1 1
2 1
3 2
4 5
5 14
6 38
7 120
8 353
9 1148
10 3527
11 11622
12 36627
13 121622
14 389560
15 1301140
16 4215748
17 14146335
18 46235800
19 155741571
20 512559195
21 1732007938
22 5732533570
23 19423092113
24 64590165281
25 219349187968
26 732358098471
27 2492051377341
28 8349072895553
29 28459491475593

[1,1,2,5,14,38,120,353,1148,3527,11622,36627,
 121622,389560,1301140,4215748,14146335,46235800,
 155741571,512559195,1732007938,5732533570,
 19423092113,64590165281,219349187968,732358098471,
 2492051377341,8349072895553,28459491475593]

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Last modified March 19 06:32 EDT 2024. Contains 370953 sequences. (Running on oeis4.)