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.

A126006 Involution of nonnegative integers: Swap the positions of digits q0 <-> q1, q2 <-> q3, q4 <-> q5, etc. in the base-4 expansion of n (where n = ... + q4*256 + q3*64 + q2*16 + q1*4 + q0).

Table of values

n a(n)
0 0
1 4
2 8
3 12
4 1
5 5
6 9
7 13
8 2
9 6
10 10
11 14
12 3
13 7
14 11
15 15
16 64
17 68
18 72
19 76
20 65
21 69
22 73
23 77
24 66
25 70
26 74
27 78
28 67
29 71
30 75
31 79
32 128
33 132
34 136
35 140
36 129
37 133
38 137
39 141
40 130
41 134
42 138
43 142
44 131
45 135
46 139
47 143
48 192
49 196
50 200
51 204
52 193
53 197
54 201
55 205
56 194
57 198
58 202
59 206
60 195

List of values

[0, 4, 8, 12, 1, 5, 9, 13, 2, 6, 10, 14, 3, 7, 11, 15, 64, 68, 72, 76, 65, 69, 73, 77, 66, 70, 74, 78, 67, 71, 75, 79, 128, 132, 136, 140, 129, 133, 137, 141, 130, 134, 138, 142, 131, 135, 139, 143, 192, 196, 200, 204, 193, 197, 201, 205, 194, 198, 202, 206, 195]