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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.

A342560 2*a(n) is the first of 5 consecutive even numbers that are sums of divisors, i.e., terms of A000203.

Table of values

n a(n)
1 18
2 78
3 270
4 306
5 558
6 846
7 1098
8 1182
9 1188
10 1590
11 1608
12 1626
13 2106
14 2196
15 2298
16 2538
17 2718
18 2868
19 4368
20 4590
21 4716
22 4806
23 4926
24 4950
25 6078
26 7866
27 8646
28 8700
29 8952
30 9150
31 9558
32 9918
33 10176
34 10506
35 10998
36 11358
37 11778
38 12648
39 12870
40 13116
41 13530
42 13638
43 15090
44 16806

List of values

[18, 78, 270, 306, 558, 846, 1098, 1182, 1188, 1590, 1608, 1626, 2106, 2196, 2298, 2538, 2718, 2868, 4368, 4590, 4716, 4806, 4926, 4950, 6078, 7866, 8646, 8700, 8952, 9150, 9558, 9918, 10176, 10506, 10998, 11358, 11778, 12648, 12870, 13116, 13530, 13638, 15090, 16806]

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

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