cp's OEIS Frontend

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.

A267808 a(0) = a(1) = 1; for n>1, a(n) = (a(n-1) mod 4) + a(n-2).

Table of values

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

List of values

[1, 1, 2, 3, 5, 4, 5, 5, 6, 7, 9, 8, 9, 9, 10, 11, 13, 12, 13, 13, 14, 15, 17, 16, 17, 17, 18, 19, 21, 20, 21, 21, 22, 23, 25, 24, 25, 25, 26, 27, 29, 28, 29, 29, 30, 31, 33, 32, 33, 33, 34, 35, 37, 36, 37, 37, 38, 39, 41, 40, 41, 41, 42, 43, 45, 44, 45, 45, 46, 47, 49]

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