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.

A080580 a(1)=1; for n>1, a(n)=a(n-1)+2 if n is already in the sequence, a(n)=a(n-1)+4 otherwise.

Table of values

n a(n)
1 1
2 5
3 9
4 13
5 15
6 19
7 23
8 27
9 29
10 33
11 37
12 41
13 43
14 47
15 49
16 53
17 57
18 61
19 63
20 67
21 71
22 75
23 77
24 81
25 85
26 89
27 91
28 95
29 97
30 101
31 105
32 109
33 111
34 115
35 119
36 123
37 125
38 129
39 133
40 137
41 139
42 143
43 145
44 149
45 153
46 157
47 159
48 163
49 165
50 169
51 173
52 177
53 179
54 183
55 187
56 191
57 193

List of values

[1, 5, 9, 13, 15, 19, 23, 27, 29, 33, 37, 41, 43, 47, 49, 53, 57, 61, 63, 67, 71, 75, 77, 81, 85, 89, 91, 95, 97, 101, 105, 109, 111, 115, 119, 123, 125, 129, 133, 137, 139, 143, 145, 149, 153, 157, 159, 163, 165, 169, 173, 177, 179, 183, 187, 191, 193]