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.

A231901 Least k > n such that k!/n! + 1 is a prime, or 0 if no such k exists.

Table of values

n a(n)
0 1
1 2
2 4
3 4
4 6
5 6
6 11
7 9
8 11
9 10
10 20
11 12
12 15
13 15
14 16
15 16
16 18
17 18
18 23
19 21
20 22
21 22
22 40
23 25
24 27
25 31
26 28
27 28
28 37
29 30
30 42
31 38
32 34
33 36
34 42
35 36
36 110
37 39
38 43
39 40
40 42
41 42
42 56
43 46
44 50
45 46
46 55
47 65
48 51
49 51
50 53
51 52
52 55
53 55
54 73
55 58
56 58
57 58
58 60
59 60
60 63
61 63
62 177
63 68
64 70
65 66
66 82
67 72

List of values

[1, 2, 4, 4, 6, 6, 11, 9, 11, 10, 20, 12, 15, 15, 16, 16, 18, 18, 23, 21, 22, 22, 40, 25, 27, 31, 28, 28, 37, 30, 42, 38, 34, 36, 42, 36, 110, 39, 43, 40, 42, 42, 56, 46, 50, 46, 55, 65, 51, 51, 53, 52, 55, 55, 73, 58, 58, 58, 60, 60, 63, 63, 177, 68, 70, 66, 82, 72]