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.

A072461 Numbers k such that sigma(k) == 1 (mod 4).

Table of values

n a(n)
1 1
2 9
3 49
4 50
5 81
6 100
7 121
8 200
9 338
10 361
11 400
12 441
13 450
14 529
15 578
16 625
17 676
18 729
19 800
20 900
21 961
22 1089
23 1156
24 1352
25 1600
26 1682
27 1800
28 1849
29 2209
30 2312
31 2401
32 2450
33 2704
34 2738
35 3042
36 3200
37 3249
38 3362
39 3364
40 3481
41 3600
42 3969
43 4050
44 4225
45 4489
46 4624
47 4761

List of values

[1, 9, 49, 50, 81, 100, 121, 200, 338, 361, 400, 441, 450, 529, 578, 625, 676, 729, 800, 900, 961, 1089, 1156, 1352, 1600, 1682, 1800, 1849, 2209, 2312, 2401, 2450, 2704, 2738, 3042, 3200, 3249, 3362, 3364, 3481, 3600, 3969, 4050, 4225, 4489, 4624, 4761]

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

Content is available under The OEIS End-User License Agreement.