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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.

A339310 a(n) = a(n-1-a(n-1)) + a(n-a(n-2)) for n>2; starting with a(1) = a(2) = 1.

Table of values

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

List of values

[1, 1, 2, 3, 3, 3, 5, 4, 6, 5, 6, 8, 8, 6, 9, 8, 8, 11, 11, 10, 10, 14, 12, 11, 16, 15, 12, 17, 14, 17, 16, 18, 14, 19, 19, 16, 21, 22, 19, 21, 25, 18, 22, 25, 23, 24, 25, 25, 23, 31, 28, 22, 33, 28, 29, 32, 28, 29, 30, 30, 33, 35, 29, 33, 32, 28, 41, 36, 35]

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