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A058520 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 8
5 17
6 35
7 73
8 152
9 316
10 659
11 1376
12 2875
13 6004
14 12535
15 26173
16 54654
17 114134
18 238348
19 497743
20 1039432
21 2170634
22 4532949
23 9466295
24 19768943
25 41284768
26 86218046
27 180056039
28 376025957
29 785286555
30 1639979712
31 3424906290

[1,1,2,4,8,17,35,73,152,316,659,1376,2875,6004,
 12535,26173,54654,114134,238348,497743,1039432,
 2170634,4532949,9466295,19768943,41284768,
 86218046,180056039,376025957,785286555,1639979712,
 3424906290]

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Last modified October 2 20:53 EDT 2022. Contains 357230 sequences. (Running on oeis4.)