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.

A228058 Odd numbers of the form p^(1+4k) * r^2, where p is prime of the form 1+4m, r > 1, and gcd(p,r) = 1. (Euler's criteria for odd perfect numbers).

Table of values

n a(n)
1 45
2 117
3 153
4 245
5 261
6 325
7 333
8 369
9 405
10 425
11 477
12 549
13 605
14 637
15 657
16 725
17 801
18 833
19 845
20 873
21 909
22 925
23 981
24 1017
25 1025
26 1053
27 1233
28 1325
29 1341
30 1377
31 1413
32 1421
33 1445
34 1525
35 1557
36 1573
37 1629
38 1737
39 1773
40 1805
41 1813
42 1825
43 2009
44 2057
45 2061
46 2097
47 2169

List of values

[45, 117, 153, 245, 261, 325, 333, 369, 405, 425, 477, 549, 605, 637, 657, 725, 801, 833, 845, 873, 909, 925, 981, 1017, 1025, 1053, 1233, 1325, 1341, 1377, 1413, 1421, 1445, 1525, 1557, 1573, 1629, 1737, 1773, 1805, 1813, 1825, 2009, 2057, 2061, 2097, 2169]