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A011909 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 0
5 2
6 4
7 7
8 12
9 18
10 26
11 36
12 48
13 63
14 80
15 101
16 124
17 151
18 181
19 215
20 253
21 295
22 342
23 393
24 449
25 511
26 577
27 650
28 728
29 812
30 902
31 998
32 1102
33 1212
34 1329
35 1454
36 1586
37 1726
38 1874
39 2030
40 2195
41 2368
42 2551
43 2742
44 2943

[0,0,0,0,0,2,4,7,12,18,26,36,48,63,80,101,124,151,
 181,215,253,295,342,393,449,511,577,650,728,812,
 902,998,1102,1212,1329,1454,1586,1726,1874,2030,
 2195,2368,2551,2742,2943]

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Last modified October 23 23:05 EDT 2021. Contains 348217 sequences. (Running on oeis4.)