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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.

A092345 a(0)=1; a(n) = sigma_1(n) + sigma_3(n).

Table of values

n a(n)
0 1
1 2
2 12
3 32
4 80
5 132
6 264
7 352
8 600
9 770
10 1152
11 1344
12 2072
13 2212
14 3120
15 3552
16 4712
17 4932
18 6852
19 6880
20 9240
21 9664
22 12024
23 12192
24 16440
25 15782
26 19824
27 20480
28 25168
29 24420
30 31824
31 29824
32 37512
33 37344
34 44280
35 43392
36 55352
37 50692
38 61800
39 61600
40 73800
41 68964
42 86784

List of values

[1, 2, 12, 32, 80, 132, 264, 352, 600, 770, 1152, 1344, 2072, 2212, 3120, 3552, 4712, 4932, 6852, 6880, 9240, 9664, 12024, 12192, 16440, 15782, 19824, 20480, 25168, 24420, 31824, 29824, 37512, 37344, 44280, 43392, 55352, 50692, 61800, 61600, 73800, 68964, 86784]

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

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