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.

A248857 Composite numbers n such that n - phi(n) is a power of 10.

Table of values

n a(n)
1 1320
2 1640
3 1768
4 1996
5 13200
6 16400
7 19984
8 19996
9 132000
10 164000
11 199996
12 1320000
13 1640000
14 1999936
15 13200000
16 16400000
17 16666240
18 17999488
19 18515584
20 19999984
21 19999996
22 132000000
23 164000000
24 164296960
25 166662400
26 199999936
27 199999984
28 1320000000

List of values

[1320, 1640, 1768, 1996, 13200, 16400, 19984, 19996, 132000, 164000, 199996, 1320000, 1640000, 1999936, 13200000, 16400000, 16666240, 17999488, 18515584, 19999984, 19999996, 132000000, 164000000, 164296960, 166662400, 199999936, 199999984, 1320000000]