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A130518 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 2
5 3
6 5
7 7
8 9
9 12
10 15
11 18
12 22
13 26
14 30
15 35
16 40
17 45
18 51
19 57
20 63
21 70
22 77
23 84
24 92
25 100
26 108
27 117
28 126
29 135
30 145
31 155
32 165
33 176
34 187
35 198
36 210
37 222
38 234
39 247
40 260
41 273
42 287
43 301
44 315
45 330
46 345
47 360
48 376
49 392
50 408
51 425
52 442
53 459
54 477
55 495
56 513
57 532
58 551
59 570

[0,0,0,1,2,3,5,7,9,12,15,18,22,26,30,35,40,45,51,
 57,63,70,77,84,92,100,108,117,126,135,145,155,165,
 176,187,198,210,222,234,247,260,273,287,301,315,
 330,345,360,376,392,408,425,442,459,477,495,513,
 532,551,570]

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Last modified April 24 20:08 EDT 2024. Contains 371963 sequences. (Running on oeis4.)