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.

A120205 a(1) = 4; a(n) = floor((39 + Sum_{i=1..n-1} a(i))/9).

Table of values

n a(n)
1 4
2 4
3 5
4 5
5 6
6 7
7 7
8 8
9 9
10 10
11 11
12 12
13 14
14 15
15 17
16 19
17 21
18 23
19 26
20 29
21 32
22 35
23 39
24 44
25 49
26 54
27 60
28 67
29 74
30 82
31 91
32 102
33 113
34 125
35 139
36 155
37 172
38 191
39 212
40 236
41 262
42 291
43 324
44 360
45 400
46 444
47 493
48 548
49 609
50 677
51 752
52 835
53 928
54 1031
55 1146
56 1273
57 1415
58 1572

List of values

[4, 4, 5, 5, 6, 7, 7, 8, 9, 10, 11, 12, 14, 15, 17, 19, 21, 23, 26, 29, 32, 35, 39, 44, 49, 54, 60, 67, 74, 82, 91, 102, 113, 125, 139, 155, 172, 191, 212, 236, 262, 291, 324, 360, 400, 444, 493, 548, 609, 677, 752, 835, 928, 1031, 1146, 1273, 1415, 1572]