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A002865 as a simple table

n a(n)
0 1
1 0
2 1
3 1
4 2
5 2
6 4
7 4
8 7
9 8
10 12
11 14
12 21
13 24
14 34
15 41
16 55
17 66
18 88
19 105
20 137
21 165
22 210
23 253
24 320
25 383
26 478
27 574
28 708
29 847
30 1039
31 1238
32 1507
33 1794
34 2167
35 2573
36 3094
37 3660
38 4378
39 5170
40 6153
41 7245
42 8591
43 10087
44 11914
45 13959
46 16424
47 19196
48 22519
49 26252
50 30701

[1,0,1,1,2,2,4,4,7,8,12,14,21,24,34,41,55,66,88,
 105,137,165,210,253,320,383,478,574,708,847,1039,
 1238,1507,1794,2167,2573,3094,3660,4378,5170,6153,
 7245,8591,10087,11914,13959,16424,19196,22519,
 26252,30701]

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)