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.

A222579 Least prime p_m with p_m+1 practical such that n=p_m -p_{m-1}+...+(-1)^{m-k}p_k for some 0 with p_k-1 practical.

Table of values

n a(n)
1 3
2 5
3 7
4 5
5 7
6 11
7 19
8 11
9 11
10 17
11 19
12 17
13 17
14 23
15 19
16 23
17 23
18 31
19 31
20 41
21 23
22 41
23 31
24 47
25 29
26 47
27 41
28 59
29 53
30 59
31 47
32 59
33 59
34 79
35 41
36 83
37 59
38 79
39 47
40 83
41 71
42 83
43 53
44 83
45 47
46 103
47 79
48 107
49 53
50 103
51 59
52 103
53 89
54 103
55 71
56 131
57 79
58 127
59 103
60 131
61 79
62 127
63 83
64 149
65 71
66 127
67 89
68 127
69 107
70 127
71 79
72 191
73 83
74 149
75 107
76 197
77 83
78 149
79 131
80 167
81 139
82 149
83 103
84 149
85 89
86 149
87 103
88 167
89 127
90 179
91 149
92 167
93 107
94 167
95 139
96 167
97 107
98 179
99 103
100 179

List of values

[3, 5, 7, 5, 7, 11, 19, 11, 11, 17, 19, 17, 17, 23, 19, 23, 23, 31, 31, 41, 23, 41, 31, 47, 29, 47, 41, 59, 53, 59, 47, 59, 59, 79, 41, 83, 59, 79, 47, 83, 71, 83, 53, 83, 47, 103, 79, 107, 53, 103, 59, 103, 89, 103, 71, 131, 79, 127, 103, 131, 79, 127, 83, 149, 71, 127, 89, 127, 107, 127, 79, 191, 83, 149, 107, 197, 83, 149, 131, 167, 139, 149, 103, 149, 89, 149, 103, 167, 127, 179, 149, 167, 107, 167, 139, 167, 107, 179, 103, 179]