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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.

A185961 Let d_1=1 < d_2 < d_3 < ... be the divisors of n; sequence lists positive numbers n such that for some k, n = 2(d_1 + ... + d_k).

Table of values

n a(n)
1 2
2 6
3 12
4 28
5 40
6 48
7 224
8 234
9 496
10 960
11 8128
12 47616
13 174592
14 10371840
15 15037440
16 28090368
17 33550336
18 134209536
19 207516672
20 492101632
21 1150402560
22 8589869056
23 59205411720
24 137438691328

List of values

[2, 6, 12, 28, 40, 48, 224, 234, 496, 960, 8128, 47616, 174592, 10371840, 15037440, 28090368, 33550336, 134209536, 207516672, 492101632, 1150402560, 8589869056, 59205411720, 137438691328]

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

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