cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A378742 Primitively abundant numbers k for which A378664(k) = 6, where A378664 is the greatest divisor d of n such that sigma(d) <= 2*d < A003961(d), or 1 if no such divisor exists.

Table of values

n a(n)
1 12
2 66
3 102
4 174
5 186
6 222
7 246
8 258
9 282
10 318
11 354
12 366
13 402
14 426
15 438
16 474
17 498
18 534
19 582
20 606
21 618
22 642
23 654
24 678
25 762
26 786
27 822
28 834
29 894
30 906
31 942
32 978
33 1002
34 1038
35 1074
36 1086
37 1146
38 1158
39 1182
40 1194
41 1266
42 1338
43 1362
44 1374
45 1398
46 1434
47 1446
48 1506
49 1542
50 1578
51 1614
52 1626
53 1662
54 1686
55 1698
56 1758
57 1842
58 1866

List of values

[12, 66, 102, 174, 186, 222, 246, 258, 282, 318, 354, 366, 402, 426, 438, 474, 498, 534, 582, 606, 618, 642, 654, 678, 762, 786, 822, 834, 894, 906, 942, 978, 1002, 1038, 1074, 1086, 1146, 1158, 1182, 1194, 1266, 1338, 1362, 1374, 1398, 1434, 1446, 1506, 1542, 1578, 1614, 1626, 1662, 1686, 1698, 1758, 1842, 1866]