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.

A273665 a(0) = 0; for n >= 1: if n = A153880(k) for some k, then a(n) = 2*a(k), otherwise, n = A273670(h) for some h, and a(n) = 1 + 2*a(h).

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 5
5 7
6 4
7 11
8 6
9 15
10 9
11 23
12 10
13 13
14 14
15 31
16 19
17 47
18 21
19 27
20 29
21 63
22 39
23 95
24 8
25 43
26 22
27 55
28 59
29 127
30 12
31 79
32 30
33 191
34 17
35 87
36 18
37 45
38 46
39 111
40 119
41 255
42 25
43 159
44 61
45 383
46 35
47 175
48 20
49 37
50 26
51 91
52 93
53 223
54 28
55 239
56 62
57 511
58 51
59 319
60 38
61 123
62 94
63 767
64 71
65 351
66 41
67 75
68 53
69 183
70 187
71 447
72 42
73 57
74 54
75 479
76 125
77 1023
78 58

List of values

[0, 1, 2, 3, 5, 7, 4, 11, 6, 15, 9, 23, 10, 13, 14, 31, 19, 47, 21, 27, 29, 63, 39, 95, 8, 43, 22, 55, 59, 127, 12, 79, 30, 191, 17, 87, 18, 45, 46, 111, 119, 255, 25, 159, 61, 383, 35, 175, 20, 37, 26, 91, 93, 223, 28, 239, 62, 511, 51, 319, 38, 123, 94, 767, 71, 351, 41, 75, 53, 183, 187, 447, 42, 57, 54, 479, 125, 1023, 58]