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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.

A244477 a(1)=3, a(2)=2, a(3)=1; thereafter a(n) = a(n-a(n-1)) + a(n-a(n-2)).

Table of values

n a(n)
1 3
2 2
3 1
4 3
5 5
6 4
7 3
8 8
9 7
10 3
11 11
12 10
13 3
14 14
15 13
16 3
17 17
18 16
19 3
20 20
21 19
22 3
23 23
24 22
25 3
26 26
27 25
28 3
29 29
30 28
31 3
32 32
33 31
34 3
35 35
36 34
37 3
38 38
39 37
40 3
41 41
42 40
43 3
44 44
45 43
46 3
47 47
48 46
49 3
50 50
51 49
52 3
53 53
54 52
55 3
56 56
57 55
58 3
59 59
60 58
61 3
62 62
63 61
64 3
65 65
66 64
67 3
68 68
69 67
70 3
71 71
72 70
73 3
74 74
75 73
76 3
77 77
78 76
79 3
80 80

List of values

[3, 2, 1, 3, 5, 4, 3, 8, 7, 3, 11, 10, 3, 14, 13, 3, 17, 16, 3, 20, 19, 3, 23, 22, 3, 26, 25, 3, 29, 28, 3, 32, 31, 3, 35, 34, 3, 38, 37, 3, 41, 40, 3, 44, 43, 3, 47, 46, 3, 50, 49, 3, 53, 52, 3, 56, 55, 3, 59, 58, 3, 62, 61, 3, 65, 64, 3, 68, 67, 3, 71, 70, 3, 74, 73, 3, 77, 76, 3, 80]

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