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A309683 as a simple table

n a(n)
0 0
1 0
2 0
3 1
4 1
5 2
6 2
7 3
8 3
9 5
10 5
11 7
12 7
13 9
14 9
15 12
16 12
17 15
18 15
19 18
20 18
21 22
22 22
23 26
24 26
25 30
26 30
27 35
28 35
29 40
30 40
31 45
32 45
33 51
34 51
35 57
36 57
37 63
38 63
39 70
40 70
41 77
42 77
43 84
44 84
45 92
46 92
47 100
48 100
49 108
50 108
51 117
52 117
53 126
54 126
55 135
56 135
57 145
58 145
59 155
60 155
61 165
62 165
63 176

[0,0,0,1,1,2,2,3,3,5,5,7,7,9,9,12,12,15,15,18,18,
 22,22,26,26,30,30,35,35,40,40,45,45,51,51,57,57,
 63,63,70,70,77,77,84,84,92,92,100,100,108,108,117,
 117,126,126,135,135,145,145,155,155,165,165,176]

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Last modified April 25 07:53 EDT 2024. Contains 371964 sequences. (Running on oeis4.)