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.

A293927 Numbers n such that prime(k) XOR prime(k+1) XOR ... XOR prime(n) = 0 for some k < n (where XOR denotes the binary XOR operator, and prime(n) = A000040(n)).

Table of values

n a(n)
1 17
2 28
3 30
4 33
5 36
6 43
7 45
8 47
9 51
10 52
11 56
12 58
13 65
14 66
15 72
16 74
17 76
18 80
19 84
20 90
21 94
22 107
23 111
24 119
25 126
26 129
27 130
28 133
29 137
30 143
31 145
32 155
33 156
34 166
35 169
36 174
37 179
38 185
39 192
40 200
41 202
42 204
43 208
44 213
45 214
46 216
47 219
48 228
49 238
50 246
51 248
52 249
53 250
54 254
55 258
56 262

List of values

[17, 28, 30, 33, 36, 43, 45, 47, 51, 52, 56, 58, 65, 66, 72, 74, 76, 80, 84, 90, 94, 107, 111, 119, 126, 129, 130, 133, 137, 143, 145, 155, 156, 166, 169, 174, 179, 185, 192, 200, 202, 204, 208, 213, 214, 216, 219, 228, 238, 246, 248, 249, 250, 254, 258, 262]

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

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