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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.

A224317 a(n) = a(n-1) + 3 - a(n-1)!.

Table of values

n a(n)
1 1
2 3
3 0
4 2
5 3
6 0
7 2
8 3
9 0
10 2
11 3
12 0
13 2
14 3
15 0
16 2
17 3
18 0
19 2
20 3
21 0
22 2
23 3
24 0
25 2
26 3
27 0
28 2
29 3
30 0
31 2
32 3
33 0
34 2
35 3
36 0
37 2
38 3
39 0
40 2
41 3
42 0
43 2
44 3
45 0
46 2
47 3
48 0
49 2
50 3
51 0
52 2
53 3
54 0
55 2
56 3
57 0
58 2
59 3
60 0
61 2
62 3
63 0
64 2
65 3
66 0
67 2
68 3
69 0
70 2
71 3
72 0
73 2
74 3
75 0
76 2
77 3
78 0
79 2
80 3
81 0
82 2

List of values

[1, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2, 3, 0, 2]

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