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A237980 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 2
6 2
7 3
8 3
9 4
10 5
11 6
12 7
13 9
14 10
15 13
16 15
17 18
18 21
19 25
20 28
21 32
22 36
23 44
24 49
25 60
26 66
27 80
28 89
29 103
30 115
31 132
32 147
33 168
34 188
35 212
36 236
37 269
38 301
39 344
40 385
41 437
42 485
43 549
44 606
45 678
46 751
47 837
48 926
49 1031
50 1133
51 1263
52 1389
53 1541
54 1696
55 1889
56 2068
57 2306
58 2529

[1,1,1,1,2,2,3,3,4,5,6,7,9,10,13,15,18,21,25,28,
 32,36,44,49,60,66,80,89,103,115,132,147,168,188,
 212,236,269,301,344,385,437,485,549,606,678,751,
 837,926,1031,1133,1263,1389,1541,1696,1889,2068,
 2306,2529]

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Last modified April 25 05:56 EDT 2024. Contains 371964 sequences. (Running on oeis4.)