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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.

A081832 a(1)=a(2)=1, a(n) = a(n+1-2*a(n-1)) + a(n-2*a(n-2)).

Table of values

n a(n)
1 1
2 1
3 2
4 2
5 2
6 3
7 3
8 3
9 4
10 4
11 4
12 4
13 5
14 5
15 5
16 6
17 6
18 6
19 6
20 7
21 7
22 7
23 8
24 8
25 8
26 8
27 8
28 9
29 9
30 9
31 10
32 10
33 10
34 10
35 11
36 11
37 11
38 12
39 12
40 12
41 12
42 12
43 13
44 13
45 13
46 14
47 14
48 14
49 14
50 15
51 15
52 15
53 16
54 16
55 16
56 16
57 16
58 16
59 17
60 17
61 17
62 18
63 18
64 18
65 18
66 19
67 19
68 19
69 20
70 20
71 20
72 20
73 20
74 21
75 21
76 21
77 22
78 22
79 22

List of values

[1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 10, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 12, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 16, 16, 16, 16, 16, 16, 17, 17, 17, 18, 18, 18, 18, 19, 19, 19, 20, 20, 20, 20, 20, 21, 21, 21, 22, 22, 22]

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