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.

A044072 Numbers k such that string 2,3 occurs in the base 4 representation of k but not of k-1.

Table of values

n a(n)
1 11
2 27
3 43
4 59
5 75
6 91
7 107
8 123
9 139
10 155
11 171
12 203
13 219
14 235
15 251
16 267
17 283
18 299
19 315
20 331
21 347
22 363
23 379
24 395
25 411
26 427
27 459
28 475
29 491
30 507
31 523
32 539
33 555
34 571
35 587
36 603
37 619
38 635
39 651
40 667
41 683
42 779
43 795
44 811
45 827
46 843
47 859
48 875
49 891
50 907
51 923
52 939
53 971

List of values

[11, 27, 43, 59, 75, 91, 107, 123, 139, 155, 171, 203, 219, 235, 251, 267, 283, 299, 315, 331, 347, 363, 379, 395, 411, 427, 459, 475, 491, 507, 523, 539, 555, 571, 587, 603, 619, 635, 651, 667, 683, 779, 795, 811, 827, 843, 859, 875, 891, 907, 923, 939, 971]