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.

A247631 Numbers k such that d(r,k) = 0 and d(s,k) = 0, where d(x,k) = k-th binary digit of x, r = {sqrt(2)}, s = {sqrt(8)}, and { } = fractional part.

Table of values

n a(n)
1 8
2 9
3 10
4 11
5 14
6 20
7 24
8 28
9 37
10 47
11 51
12 54
13 57
14 58
15 59
16 62
17 63
18 69
19 81
20 82
21 85
22 92
23 106
24 121
25 128
26 129
27 147
28 148
29 149
30 150
31 161
32 162
33 165
34 168
35 181
36 182
37 183
38 186
39 190
40 200
41 201
42 214
43 217
44 218
45 219
46 225
47 226
48 227
49 228
50 232
51 236
52 241
53 245
54 248
55 249
56 258

List of values

[8, 9, 10, 11, 14, 20, 24, 28, 37, 47, 51, 54, 57, 58, 59, 62, 63, 69, 81, 82, 85, 92, 106, 121, 128, 129, 147, 148, 149, 150, 161, 162, 165, 168, 181, 182, 183, 186, 190, 200, 201, 214, 217, 218, 219, 225, 226, 227, 228, 232, 236, 241, 245, 248, 249, 258]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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