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.

A066663 Numbers n such that phi(n) is a proper substring of n.

Table of values

n a(n)
1 1320
2 1640
3 1768
4 1996
5 2640
6 3960
7 13200
8 16400
9 19984
10 19996
11 26400
12 39600
13 132000
14 164000
15 199996
16 264000
17 396000
18 1320000
19 1640000
20 1999936
21 2640000
22 3960000
23 13200000
24 16400000
25 16666240
26 17999488
27 18515584
28 19999984
29 19999996

List of values

[1320, 1640, 1768, 1996, 2640, 3960, 13200, 16400, 19984, 19996, 26400, 39600, 132000, 164000, 199996, 264000, 396000, 1320000, 1640000, 1999936, 2640000, 3960000, 13200000, 16400000, 16666240, 17999488, 18515584, 19999984, 19999996]