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A053251 as a simple table

n a(n)
0 0
1 1
2 1
3 1
4 2
5 2
6 2
7 3
8 3
9 4
10 5
11 5
12 6
13 7
14 8
15 9
16 11
17 12
18 13
19 16
20 17
21 19
22 22
23 24
24 27
25 31
26 34
27 37
28 42
29 46
30 51
31 57
32 62
33 68
34 76
35 83
36 91
37 101
38 109
39 120
40 132
41 143
42 156
43 171
44 186
45 202
46 221
47 239
48 259
49 283
50 306
51 331
52 360
53 388
54 420
55 455
56 490
57 529
58 572
59 616
60 663
61 716
62 769
63 827

[0,1,1,1,2,2,2,3,3,4,5,5,6,7,8,9,11,12,13,16,17,
 19,22,24,27,31,34,37,42,46,51,57,62,68,76,83,91,
 101,109,120,132,143,156,171,186,202,221,239,259,
 283,306,331,360,388,420,455,490,529,572,616,663,
 716,769,827]

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Last modified August 21 06:07 EDT 2018. Contains 313934 sequences. (Running on oeis4.)