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.

A247137 Numbers for which the root mean square of nontrivial divisors is an integer and which are not a square of prime numbers.

Table of values

n a(n)
1 119
2 161
3 343
4 369
5 527
6 711
7 721
8 833
9 959
10 1081
11 1127
12 1241
13 1695
14 1767
15 2047
16 3281
17 3335
18 3553
19 3713
20 4207
21 4633
22 4681
23 5047
24 5215
25 6713
26 6887
27 7327
28 7775
29 9641
30 12319
31 14031
32 16617
33 16999
34 18473
35 19199
36 22145
37 27009
38 27913
39 29449
40 31679
41 32239
42 32599
43 37241
44 44801
45 45385
46 47865
47 47959
48 50279
49 52319
50 56033

List of values

[119, 161, 343, 369, 527, 711, 721, 833, 959, 1081, 1127, 1241, 1695, 1767, 2047, 3281, 3335, 3553, 3713, 4207, 4633, 4681, 5047, 5215, 6713, 6887, 7327, 7775, 9641, 12319, 14031, 16617, 16999, 18473, 19199, 22145, 27009, 27913, 29449, 31679, 32239, 32599, 37241, 44801, 45385, 47865, 47959, 50279, 52319, 56033]

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

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