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.

A122798 A P_5-stuttered arithmetic progression with a(n+1) = a(n) if n is a pentagonal number, a(n+1) = a(n)+4 otherwise.

Table of values

n a(n)
1 1
2 1
3 5
4 9
5 13
6 13
7 17
8 21
9 25
10 29
11 33
12 37
13 37
14 41
15 45
16 49
17 53
18 57
19 61
20 65
21 69
22 73
23 73
24 77
25 81
26 85
27 89
28 93
29 97
30 101
31 105
32 109
33 113
34 117
35 121
36 121
37 125
38 129
39 133
40 137
41 141
42 145
43 149
44 153
45 157
46 161
47 165
48 169
49 173
50 177
51 181
52 181
53 185
54 189
55 193
56 197
57 201
58 205
59 209

List of values

[1, 1, 5, 9, 13, 13, 17, 21, 25, 29, 33, 37, 37, 41, 45, 49, 53, 57, 61, 65, 69, 73, 73, 77, 81, 85, 89, 93, 97, 101, 105, 109, 113, 117, 121, 121, 125, 129, 133, 137, 141, 145, 149, 153, 157, 161, 165, 169, 173, 177, 181, 181, 185, 189, 193, 197, 201, 205, 209]