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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.

A246831 a(n) is the concatenation of n and 3n in binary.

Table of values

n a(n)
0 0
1 7
2 22
3 57
4 76
5 95
6 210
7 245
8 280
9 315
10 350
11 737
12 804
13 871
14 938
15 1005
16 1072
17 1139
18 1206
19 1273
20 1340
21 1407
22 2882
23 3013
24 3144
25 3275
26 3406
27 3537
28 3668
29 3799
30 3930
31 4061
32 4192
33 4323
34 4454
35 4585
36 4716
37 4847
38 4978
39 5109
40 5240
41 5371
42 5502
43 11137
44 11396
45 11655

List of values

[0, 7, 22, 57, 76, 95, 210, 245, 280, 315, 350, 737, 804, 871, 938, 1005, 1072, 1139, 1206, 1273, 1340, 1407, 2882, 3013, 3144, 3275, 3406, 3537, 3668, 3799, 3930, 4061, 4192, 4323, 4454, 4585, 4716, 4847, 4978, 5109, 5240, 5371, 5502, 11137, 11396, 11655]

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

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