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A047877 as a simple table

n a(n)
0 0
1 3
2 4
3 4
4 6
5 9
6 11
7 14
8 18
9 21
10 26
11 32
12 34
13 41
14 49
15 52
16 59
17 69
18 73
19 82
20 92
21 97
22 108
23 120
24 124
25 137
26 151
27 156
28 169
29 185
30 191
31 206
32 222
33 229
34 246
35 264
36 270
37 289
38 309
39 316
40 335
41 357
42 365
43 386
44 408
45 417
46 440
47 464
48 472
49 497
50 523

[0,3,4,4,6,9,11,14,18,21,26,32,34,41,49,52,59,69,
 73,82,92,97,108,120,124,137,151,156,169,185,191,
 206,222,229,246,264,270,289,309,316,335,357,365,
 386,408,417,440,464,472,497,523]

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Last modified January 25 01:46 EST 2020. Contains 331229 sequences. (Running on oeis4.)