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.

A178770 a(0) = a(1) = a(2) = a(3) = a(4) = 1, thereafter a(n) = a(a(n-1)) + a(n-a(n-3)).

Table of values

n a(n)
0 1
1 1
2 1
3 1
4 1
5 2
6 3
7 4
8 4
9 4
10 4
11 5
12 6
13 7
14 8
15 8
16 8
17 8
18 8
19 9
20 10
21 11
22 12
23 13
24 14
25 15
26 15
27 15
28 15
29 16
30 16
31 16
32 16
33 16
34 16
35 17
36 18
37 19
38 20
39 21
40 22
41 23
42 24
43 25
44 26
45 26
46 26
47 26
48 27
49 28
50 29
51 30
52 30
53 30
54 30
55 31
56 31
57 31
58 31
59 31
60 32
61 32
62 32
63 32
64 32
65 32
66 32
67 33
68 34
69 35
70 36
71 37
72 38
73 39
74 40

List of values

[1, 1, 1, 1, 1, 2, 3, 4, 4, 4, 4, 5, 6, 7, 8, 8, 8, 8, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 26, 26, 26, 27, 28, 29, 30, 30, 30, 30, 31, 31, 31, 31, 31, 32, 32, 32, 32, 32, 32, 32, 33, 34, 35, 36, 37, 38, 39, 40]

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