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.

A335504 Triangle read by rows, 0 <= k < n, n >= 1: T(n,k) is the eventual period of the sequence x(j) (or 0 if x(j) never enters a cycle) defined as follows: x(0) = 1 and for j > 1 x(j) is obtained from 4*x(j-1) by deleting all occurrences of the digit k in base n.

Table of values

n a(n)
1 0
2 1
3 1
4 2
5 1
6 1
7 1
8 1
9 0
10 0
11 2
12 24
13 2
14 2
15 1
16 16
17 18
18 1
19 6
20 1
21 42
22 33
23 1
24 1
25 15
26 1
27 24
28 3
29 3
30 1
31 1
32 0
33 1
34 0
35 0
36 0
37 3
38 1
39 195
40 27
41 1
42 465
43 147
44 2
45 6
46 1002
47 18
48 4
49 42
50 1
51 66
52 2
53 10
54 10
55 738
56 1660
57 25
58 5
59 180
60 1
61 2
62 15
63 35
64 150
65 4
66 1490

List of values

[0, 1, 1, 2, 1, 1, 1, 1, 0, 0, 2, 24, 2, 2, 1, 16, 18, 1, 6, 1, 42, 33, 1, 1, 15, 1, 24, 3, 3, 1, 1, 0, 1, 0, 0, 0, 3, 1, 195, 27, 1, 465, 147, 2, 6, 1002, 18, 4, 42, 1, 66, 2, 10, 10, 738, 1660, 25, 5, 180, 1, 2, 15, 35, 150, 4, 1490]