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A000238 as a simple table

n a(n)
1 1
2 1
3 3
4 8
5 27
6 91
7 350
8 1376
9 5743
10 24635
11 108968
12 492180
13 2266502
14 10598452
15 50235931
16 240872654
17 1166732814
18 5702001435
19 28088787314
20 139354922608
21 695808554300
22 3494390057212
23 17641695461662
24 89495023510876
25 456009893224285
26 2332997330210440

[1,1,3,8,27,91,350,1376,5743,24635,108968,492180,
 2266502,10598452,50235931,240872654,1166732814,
 5702001435,28088787314,139354922608,695808554300,
 3494390057212,17641695461662,89495023510876,
 456009893224285,2332997330210440]

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Last modified March 28 22:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)