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.

A386276 Numbers k such that the sequence defined by f(1) = k and f(x+1) = the sum of the three largest proper divisors of f(x), consists entirely of numbers having at least three proper divisors.

Table of values

n a(n)
1 6
2 18
3 42
4 54
5 66
6 72
7 78
8 102
9 114
10 126
11 138
12 162
13 174
14 186
15 198
16 216
17 222
18 234
19 246
20 258
21 282
22 294
23 306
24 318
25 342
26 354
27 366
28 378
29 402
30 414
31 426
32 438
33 462
34 474
35 486
36 498
37 504
38 522
39 534
40 546
41 558
42 582
43 594
44 606
45 618
46 642
47 648
48 654
49 666
50 678
51 702
52 714
53 726
54 738

List of values

[6, 18, 42, 54, 66, 72, 78, 102, 114, 126, 138, 162, 174, 186, 198, 216, 222, 234, 246, 258, 282, 294, 306, 318, 342, 354, 366, 378, 402, 414, 426, 438, 462, 474, 486, 498, 504, 522, 534, 546, 558, 582, 594, 606, 618, 642, 648, 654, 666, 678, 702, 714, 726, 738]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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