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.

A288569 Start with n and repeatedly apply the map x -> A087207(x) until we reach 0; a(n) is the number of steps needed, or -1 if 0 is never reached.

Table of values

n a(n)
1 1
2 2
3 3
4 2
5 3
6 4
7 3
8 2
9 3
10 4
11 3
12 4
13 3
14 4
15 5
16 2
17 3
18 4
19 3
20 4
21 5
22 4
23 3
24 4
25 3
26 6
27 3
28 4
29 3
30 4
31 3
32 2
33 5
34 6
35 5
36 4
37 3

List of values

[1, 2, 3, 2, 3, 4, 3, 2, 3, 4, 3, 4, 3, 4, 5, 2, 3, 4, 3, 4, 5, 4, 3, 4, 3, 6, 3, 4, 3, 4, 3, 2, 5, 6, 5, 4, 3]