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A281375 as a simple table

n a(n)
1 4
2 4
3 5
4 8
5 12
6 21
7 36
8 64
9 113
10 204
11 372
12 682
13 1260
14 2340
15 4369
16 8192
17 15420
18 29127
19 55188
20 104857
21 199728
22 381300
23 729444
24 1398101
25 2684354
26 5162220
27 9942053
28 19173961
29 37025580
30 71582788
31 138547332
32 268435456
33 520602096
34 1010580540
35 1963413621
36 3817748707
37 7429132620
38 14467258260
39 28192605840
40 54975581388

[4,4,5,8,12,21,36,64,113,204,372,682,1260,2340,
 4369,8192,15420,29127,55188,104857,199728,381300,
 729444,1398101,2684354,5162220,9942053,19173961,
 37025580,71582788,138547332,268435456,520602096,
 1010580540,1963413621,3817748707,7429132620,
 14467258260,28192605840,54975581388]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)