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A058521 as a simple table

n a(n)
1 1
2 1
3 1
4 2
5 3
6 4
7 7
8 11
9 20
10 36
11 67
12 121
13 215
14 377
15 657
16 1154
17 2045
18 3666
19 6628
20 12063
21 22079
22 40642
23 75264
24 140191
25 262457
26 493297
27 929703
28 1754941
29 3314509
30 6258052
31 11803995
32 22232306
33 41801393
34 78453563
35 146987053
36 274957984

[1,1,1,2,3,4,7,11,20,36,67,121,215,377,657,1154,
 2045,3666,6628,12063,22079,40642,75264,140191,
 262457,493297,929703,1754941,3314509,6258052,
 11803995,22232306,41801393,78453563,146987053,
 274957984]

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Last modified October 14 14:45 EDT 2019. Contains 328019 sequences. (Running on oeis4.)