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.

A200519 Least m>0 such that n = y^2 - 9^x (mod m) has no solution, or 0 if no such m exists.

Table of values

n a(n)
0 0
1 4
2 4
3 0
4 8
5 4
6 4
7 0
8 0
9 4
10 4
11 9
12 8
13 4
14 4
15 0
16 0
17 4
18 4
19 0
20 8
21 4
22 4
23 9
24 0
25 4
26 4
27 0
28 8
29 4
30 4
31 80
32 9
33 4
34 4
35 0
36 8
37 4
38 4
39 63
40 0
41 4
42 4
43 80
44 8
45 4
46 4
47 9
48 0
49 4
50 4
51 45
52 8
53 4
54 4
55 0
56 9
57 4
58 4
59 9
60 8
61 4
62 4
63 0
64 133
65 4
66 4
67 80
68 8
69 4
70 4
71 15
72 0
73 4
74 4
75 63
76 8
77 4
78 4

List of values

[0, 4, 4, 0, 8, 4, 4, 0, 0, 4, 4, 9, 8, 4, 4, 0, 0, 4, 4, 0, 8, 4, 4, 9, 0, 4, 4, 0, 8, 4, 4, 80, 9, 4, 4, 0, 8, 4, 4, 63, 0, 4, 4, 80, 8, 4, 4, 9, 0, 4, 4, 45, 8, 4, 4, 0, 9, 4, 4, 9, 8, 4, 4, 0, 133, 4, 4, 80, 8, 4, 4, 15, 0, 4, 4, 63, 8, 4, 4]