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.

A283759 Numbers whose Euler totient function is equal to the product of the number of divisors of their k first powers, for some k.

Table of values

n a(n)
1 3
2 7
3 8
4 10
5 18
6 24
7 30
8 57
9 74
10 344
11 399
12 494
13 518
14 629
15 654
16 679
17 1154
18 2408
19 2989
20 3048
21 3175
22 3458
23 3789
24 4218
25 4578
26 4890
27 5022
28 7668
29 10602
30 13720
31 14647
32 14701
33 14837
34 15613
35 16133
36 17563
37 17945
38 18335
39 19608
40 20195
41 20358
42 21243
43 21336
44 21423
45 22083
46 22503

List of values

[3, 7, 8, 10, 18, 24, 30, 57, 74, 344, 399, 494, 518, 629, 654, 679, 1154, 2408, 2989, 3048, 3175, 3458, 3789, 4218, 4578, 4890, 5022, 7668, 10602, 13720, 14647, 14701, 14837, 15613, 16133, 17563, 17945, 18335, 19608, 20195, 20358, 21243, 21336, 21423, 22083, 22503]