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A164139 as a simple table

n a(n)
0 1
1 2
2 4
3 6
4 9
5 14
6 22
7 38
8 66
9 120
10 222
11 416
12 792
13 1512
14 2909
15 5610
16 10851
17 21042
18 40864
19 79514
20 154911
21 302210
22 590251
23 1154012
24 2258488
25 4423856
26 8672541
27 17014530
28 33404100
29 65624480
30 129002143
31 253733246
32 499333096
33 983154996
34 1936685718

[1,2,4,6,9,14,22,38,66,120,222,416,792,1512,2909,
 5610,10851,21042,40864,79514,154911,302210,590251,
 1154012,2258488,4423856,8672541,17014530,33404100,
 65624480,129002143,253733246,499333096,983154996,
 1936685718]

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Last modified January 22 21:15 EST 2022. Contains 350504 sequences. (Running on oeis4.)