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A020189 as a simple table

n a(n)
1 4
2 6
3 10
4 12
5 15
6 20
7 30
8 52
9 60
10 91
11 93
12 130
13 155
14 190
15 217
16 341
17 388
18 403
19 465
20 561
21 679
22 786
23 970
24 1105
25 1261
26 1441
27 1729
28 2388
29 2465
30 2701
31 2821
32 3007
33 3406
34 3565
35 3661
36 4061
37 4123
38 4371
39 4577
40 4580
41 5044
42 5356
43 5461
44 6541
45 6601
46 6697
47 6799
48 7107
49 7372

[4,6,10,12,15,20,30,52,60,91,93,130,155,190,217,
 341,388,403,465,561,679,786,970,1105,1261,1441,
 1729,2388,2465,2701,2821,3007,3406,3565,3661,4061,
 4123,4371,4577,4580,5044,5356,5461,6541,6601,6697,
 6799,7107,7372]

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)