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.

A120203 a(1) = 2; a(n) = floor( (19 + Sum_{i=1..n-1} a(i)) /9).

Table of values

n a(n)
1 2
2 2
3 2
4 2
5 3
6 3
7 3
8 4
9 4
10 4
11 5
12 5
13 6
14 7
15 7
16 8
17 9
18 10
19 11
20 12
21 14
22 15
23 17
24 19
25 21
26 23
27 26
28 29
29 32
30 36
31 40
32 44
33 49
34 54
35 60
36 67
37 74
38 83
39 92
40 102
41 113
42 126
43 140
44 156
45 173
46 192
47 213
48 237
49 263
50 293
51 325
52 361
53 401
54 446
55 496
56 551
57 612

List of values

[2, 2, 2, 2, 3, 3, 3, 4, 4, 4, 5, 5, 6, 7, 7, 8, 9, 10, 11, 12, 14, 15, 17, 19, 21, 23, 26, 29, 32, 36, 40, 44, 49, 54, 60, 67, 74, 83, 92, 102, 113, 126, 140, 156, 173, 192, 213, 237, 263, 293, 325, 361, 401, 446, 496, 551, 612]