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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.

A105670 a(1)=1 then bracketing n by powers of 2 as f(t)=2^t for f(t) < n <= f(t+1), a(n) = f(t+1) - a(n-f(t)).

Table of values

n a(n)
1 1
2 1
3 3
4 3
5 7
6 7
7 5
8 5
9 15
10 15
11 13
12 13
13 9
14 9
15 11
16 11
17 31
18 31
19 29
20 29
21 25
22 25
23 27
24 27
25 17
26 17
27 19
28 19
29 23
30 23
31 21
32 21
33 63
34 63
35 61
36 61
37 57
38 57
39 59
40 59
41 49
42 49
43 51
44 51
45 55
46 55
47 53
48 53
49 33
50 33
51 35
52 35
53 39
54 39
55 37
56 37
57 47
58 47
59 45
60 45
61 41
62 41
63 43
64 43
65 127
66 127
67 125
68 125
69 121
70 121
71 123

List of values

[1, 1, 3, 3, 7, 7, 5, 5, 15, 15, 13, 13, 9, 9, 11, 11, 31, 31, 29, 29, 25, 25, 27, 27, 17, 17, 19, 19, 23, 23, 21, 21, 63, 63, 61, 61, 57, 57, 59, 59, 49, 49, 51, 51, 55, 55, 53, 53, 33, 33, 35, 35, 39, 39, 37, 37, 47, 47, 45, 45, 41, 41, 43, 43, 127, 127, 125, 125, 121, 121, 123]

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