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.

A043885 Numbers k such that 2 and 3 occur juxtaposed in the base-4 representation of k but not of k+1.

Table of values

n a(n)
1 11
2 14
3 27
4 30
5 47
6 59
7 62
8 75
9 78
10 91
11 94
12 111
13 123
14 126
15 139
16 142
17 155
18 158
19 191
20 203
21 206
22 219
23 222
24 239
25 251
26 254
27 267
28 270
29 283
30 286
31 303
32 315
33 318
34 331
35 334
36 347
37 350
38 367
39 379
40 382
41 395
42 398
43 411
44 414
45 447
46 459
47 462
48 475
49 478
50 495
51 507
52 510
53 523
54 526
55 539
56 542

List of values

[11, 14, 27, 30, 47, 59, 62, 75, 78, 91, 94, 111, 123, 126, 139, 142, 155, 158, 191, 203, 206, 219, 222, 239, 251, 254, 267, 270, 283, 286, 303, 315, 318, 331, 334, 347, 350, 367, 379, 382, 395, 398, 411, 414, 447, 459, 462, 475, 478, 495, 507, 510, 523, 526, 539, 542]

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

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