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.

A317305 Sum of divisors of the n-th number whose divisors increase by a factor of 2 or less.

Table of values

n a(n)
1 1
2 3
3 7
4 12
5 15
6 28
7 31
8 39
9 42
10 60
11 56
12 72
13 63
14 91
15 90
16 96
17 124
18 120
19 120
20 168
21 127
22 144
23 195
24 186
25 224
26 180
27 234
28 252
29 217
30 210
31 280
32 248
33 360
34 312
35 255
36 336
37 336
38 403
39 372
40 392
41 378
42 363
43 480
44 372
45 546
46 508
47 399
48 468
49 465
50 504
51 434
52 576
53 600
54 504
55 504
56 560
57 546
58 744
59 728
60 511

List of values

[1, 3, 7, 12, 15, 28, 31, 39, 42, 60, 56, 72, 63, 91, 90, 96, 124, 120, 120, 168, 127, 144, 195, 186, 224, 180, 234, 252, 217, 210, 280, 248, 360, 312, 255, 336, 336, 403, 372, 392, 378, 363, 480, 372, 546, 508, 399, 468, 465, 504, 434, 576, 600, 504, 504, 560, 546, 744, 728, 511]

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

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