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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.

A046700 a(1) = a(2) = a(3) = 1, a(n) = a(n - a(n-1)) + a(n - a(n-3)) for 3 < n < 165.

Table of values

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

List of values

[1, 1, 1, 2, 3, 4, 4, 5, 5, 7, 6, 8, 7, 9, 8, 10, 9, 12, 9, 12, 10, 15, 11, 16, 12, 17, 13, 18, 14, 19, 15, 21, 17, 18, 18, 21, 19, 21, 24, 20, 22, 24, 20, 31, 19, 30, 19, 28, 19, 30, 21, 32, 21, 34, 21, 36, 21, 38, 21, 48, 18, 53, 15, 49, 18, 49, 24, 61, 17, 51, 19, 42]

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