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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.

A070867 a(1) = a(2) = 1; a(n) = a(n-1 - a(n-1)) + a(n-1 - a(n-2)).

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 2
6 4
7 3
8 4
9 4
10 4
11 8
12 5
13 5
14 8
15 8
16 6
17 8
18 12
19 8
20 11
21 9
22 9
23 10
24 13
25 16
26 9
27 12
28 20
29 10
30 12
31 23
32 12
33 15
34 21
35 13
36 17
37 18
38 19
39 19
40 22
41 21
42 19
43 19
44 26
45 28
46 16
47 24
48 33
49 21
50 26
51 23
52 36
53 16
54 26
55 39
56 16
57 30
58 33
59 36
60 19
61 34
62 31
63 43
64 23
65 30
66 32
67 38
68 23
69 40
70 26
71 38
72 43
73 31
74 31
75 38
76 44

List of values

[1, 1, 2, 2, 2, 4, 3, 4, 4, 4, 8, 5, 5, 8, 8, 6, 8, 12, 8, 11, 9, 9, 10, 13, 16, 9, 12, 20, 10, 12, 23, 12, 15, 21, 13, 17, 18, 19, 19, 22, 21, 19, 19, 26, 28, 16, 24, 33, 21, 26, 23, 36, 16, 26, 39, 16, 30, 33, 36, 19, 34, 31, 43, 23, 30, 32, 38, 23, 40, 26, 38, 43, 31, 31, 38, 44]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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