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.

A383976 In the binary expansion of n, expand bits 1 -> 11 and 0 -> 10.

Table of values

n a(n)
0 2
1 3
2 14
3 15
4 58
5 59
6 62
7 63
8 234
9 235
10 238
11 239
12 250
13 251
14 254
15 255
16 938
17 939
18 942
19 943
20 954
21 955
22 958
23 959
24 1002
25 1003
26 1006
27 1007
28 1018
29 1019
30 1022
31 1023
32 3754
33 3755
34 3758
35 3759
36 3770
37 3771
38 3774
39 3775
40 3818
41 3819
42 3822
43 3823
44 3834
45 3835
46 3838
47 3839
48 4010
49 4011
50 4014

List of values

[2, 3, 14, 15, 58, 59, 62, 63, 234, 235, 238, 239, 250, 251, 254, 255, 938, 939, 942, 943, 954, 955, 958, 959, 1002, 1003, 1006, 1007, 1018, 1019, 1022, 1023, 3754, 3755, 3758, 3759, 3770, 3771, 3774, 3775, 3818, 3819, 3822, 3823, 3834, 3835, 3838, 3839, 4010, 4011, 4014]