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A005821 as a simple table

n a(n)
0 0
1 1
2 1
3 2
4 4
5 8
6 16
7 33
8 69
9 144
10 301
11 631
12 1321
13 2768
14 5799
15 12150
16 25458
17 53341
18 111765
19 234180
20 490676
21 1028110
22 2154192
23 4513665
24 9457455
25 19816148
26 41520655
27 86997979
28 182286341
29 381943474

[0,1,1,2,4,8,16,33,69,144,301,631,1321,2768,5799,
 12150,25458,53341,111765,234180,490676,1028110,
 2154192,4513665,9457455,19816148,41520655,
 86997979,182286341,381943474]

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Last modified March 29 00:26 EDT 2024. Contains 371264 sequences. (Running on oeis4.)