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A061784 as a simple table

n a(n)
1 0
2 0
3 0
4 1
5 2
6 4
7 7
8 11
9 16
10 22
11 27
12 34
13 41
14 51
15 61
16 73
17 86
18 96
19 110
20 124
21 140
22 158
23 175
24 193
25 211
26 231
27 252
28 275
29 299
30 325
31 348
32 374
33 401
34 427
35 456
36 486
37 516
38 549
39 581
40 615
41 650
42 684
43 722
44 759
45 798
46 839
47 879
48 921
49 961
50 1005
51 1048
52 1095
53 1142
54 1189
55 1238

[0,0,0,1,2,4,7,11,16,22,27,34,41,51,61,73,86,96,
 110,124,140,158,175,193,211,231,252,275,299,325,
 348,374,401,427,456,486,516,549,581,615,650,684,
 722,759,798,839,879,921,961,1005,1048,1095,1142,
 1189,1238]

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Last modified September 21 04:58 EDT 2020. Contains 337267 sequences. (Running on oeis4.)