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.

A286683 Even numbers k such that the number of odd divisors of k is equal to the 2-adic valuation of k.

Table of values

n a(n)
1 2
2 12
3 20
4 28
5 44
6 52
7 68
8 72
9 76
10 92
11 116
12 124
13 148
14 164
15 172
16 188
17 200
18 212
19 236
20 240
21 244
22 268
23 284
24 292
25 316
26 332
27 336
28 356
29 388
30 392
31 404
32 412
33 428
34 432
35 436
36 452
37 508
38 524
39 528
40 548
41 556
42 560
43 596
44 604
45 624
46 628
47 652
48 668
49 692
50 716
51 724
52 764
53 772
54 788
55 796
56 816

List of values

[2, 12, 20, 28, 44, 52, 68, 72, 76, 92, 116, 124, 148, 164, 172, 188, 200, 212, 236, 240, 244, 268, 284, 292, 316, 332, 336, 356, 388, 392, 404, 412, 428, 432, 436, 452, 508, 524, 528, 548, 556, 560, 596, 604, 624, 628, 652, 668, 692, 716, 724, 764, 772, 788, 796, 816]

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

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