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A095980 as a simple table

n a(n)
0 1
1 1
2 2
3 4
4 9
5 20
6 47
7 112
8 274
9 679
10 1708
11 4341
12 11143
13 28831
14 75135
15 197013
16 519447
17 1376256
18 3662327
19 9784106
20 26232033
21 70558313
22 190348160
23 514904151
24 1396328313
25 3795324358
26 10338000693
27 28215285901
28 77149545999
29 211314835549
30 579730469034

[1,1,2,4,9,20,47,112,274,679,1708,4341,11143,
 28831,75135,197013,519447,1376256,3662327,9784106,
 26232033,70558313,190348160,514904151,1396328313,
 3795324358,10338000693,28215285901,77149545999,
 211314835549,579730469034]

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Last modified February 29 05:25 EST 2020. Contains 332353 sequences. (Running on oeis4.)