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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.

A332445 Numbers k of the form 4m+1 for which A087808(sigma(k)) is equal to 2*A087808(k).

Table of values

n a(n)
1 2009
2 19377
3 37809
4 59373
5 74673
6 115677
7 270041
8 310329
9 354609
10 357309
11 720425
12 732321
13 841437
14 2071737
15 2612269
16 3131149
17 3866461
18 3930929
19 5172093
20 5593981
21 7118753
22 7903961
23 8224173
24 9327393
25 9438129
26 11452321
27 12708025
28 18857209
29 18861889
30 18875313
31 19110321
32 20278269
33 20709225
34 20950061
35 23963597
36 24895153

List of values

[2009, 19377, 37809, 59373, 74673, 115677, 270041, 310329, 354609, 357309, 720425, 732321, 841437, 2071737, 2612269, 3131149, 3866461, 3930929, 5172093, 5593981, 7118753, 7903961, 8224173, 9327393, 9438129, 11452321, 12708025, 18857209, 18861889, 18875313, 19110321, 20278269, 20709225, 20950061, 23963597, 24895153]

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

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