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.

A120202 a(n) = ceiling( Sum_{i=1..n-1} a(i)/9), a(1)=1.

Table of values

n a(n)
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 1
9 1
10 1
11 2
12 2
13 2
14 2
15 2
16 3
17 3
18 3
19 4
20 4
21 5
22 5
23 6
24 6
25 7
26 8
27 9
28 10
29 11
30 12
31 13
32 15
33 16
34 18
35 20
36 22
37 25
38 28
39 31
40 34
41 38
42 42
43 47
44 52
45 58
46 64
47 71
48 79
49 88
50 98
51 109
52 121
53 134
54 149
55 166
56 184
57 205
58 227
59 253
60 281
61 312
62 347
63 385
64 428
65 476
66 528
67 587
68 652
69 725
70 805
71 895

List of values

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 6, 6, 7, 8, 9, 10, 11, 12, 13, 15, 16, 18, 20, 22, 25, 28, 31, 34, 38, 42, 47, 52, 58, 64, 71, 79, 88, 98, 109, 121, 134, 149, 166, 184, 205, 227, 253, 281, 312, 347, 385, 428, 476, 528, 587, 652, 725, 805, 895]