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.

A075825 a(0) = 1, a(1) = 2; for n>0, a(2n) = |a(n)-a(n-1)|, a(2n+1) = a(n)+a(n-1).

Table of values

n a(n)
0 1
1 2
2 1
3 3
4 1
5 3
6 2
7 4
8 2
9 4
10 2
11 4
12 1
13 5
14 2
15 6
16 2
17 6
18 2
19 6
20 2
21 6
22 2
23 6
24 3
25 5
26 4
27 6
28 3
29 7
30 4
31 8
32 4
33 8
34 4
35 8
36 4
37 8
38 4
39 8
40 4
41 8
42 4
43 8
44 4
45 8
46 4
47 8
48 3
49 9
50 2
51 8
52 1
53 9
54 2
55 10
56 3
57 9
58 4
59 10
60 3
61 11
62 4
63 12
64 4
65 12
66 4
67 12
68 4
69 12
70 4
71 12
72 4
73 12
74 4
75 12
76 4
77 12
78 4
79 12
80 4
81 12
82 4
83 12
84 4
85 12
86 4
87 12
88 4
89 12
90 4
91 12
92 4
93 12
94 4

List of values

[1, 2, 1, 3, 1, 3, 2, 4, 2, 4, 2, 4, 1, 5, 2, 6, 2, 6, 2, 6, 2, 6, 2, 6, 3, 5, 4, 6, 3, 7, 4, 8, 4, 8, 4, 8, 4, 8, 4, 8, 4, 8, 4, 8, 4, 8, 4, 8, 3, 9, 2, 8, 1, 9, 2, 10, 3, 9, 4, 10, 3, 11, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4, 12, 4]