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A001591 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 1
5 1
6 2
7 4
8 8
9 16
10 31
11 61
12 120
13 236
14 464
15 912
16 1793
17 3525
18 6930
19 13624
20 26784
21 52656
22 103519
23 203513
24 400096
25 786568
26 1546352
27 3040048
28 5976577
29 11749641
30 23099186
31 45411804
32 89277256
33 175514464
34 345052351
35 678355061
36 1333610936
37 2621810068

[0,0,0,0,1,1,2,4,8,16,31,61,120,236,464,912,1793,
 3525,6930,13624,26784,52656,103519,203513,400096,
 786568,1546352,3040048,5976577,11749641,23099186,
 45411804,89277256,175514464,345052351,678355061,
 1333610936,2621810068]

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Last modified March 29 04:59 EDT 2024. Contains 371264 sequences. (Running on oeis4.)