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.

A039012 Numbers whose base-5 representation has the same number of 1's and 4's.

Table of values

n a(n)
1 0
2 2
3 3
4 9
5 10
6 12
7 13
8 15
9 17
10 18
11 21
12 29
13 39
14 44
15 45
16 47
17 48
18 50
19 52
20 53
21 59
22 60
23 62
24 63
25 65
26 67
27 68
28 71
29 75
30 77
31 78
32 84
33 85
34 87
35 88
36 90
37 92
38 93
39 96
40 101
41 105
42 107
43 108
44 111
45 116
46 129
47 139
48 144
49 145
50 147
51 148
52 174
53 179
54 189
55 194
56 195
57 197
58 198
59 204
60 214
61 219
62 220

List of values

[0, 2, 3, 9, 10, 12, 13, 15, 17, 18, 21, 29, 39, 44, 45, 47, 48, 50, 52, 53, 59, 60, 62, 63, 65, 67, 68, 71, 75, 77, 78, 84, 85, 87, 88, 90, 92, 93, 96, 101, 105, 107, 108, 111, 116, 129, 139, 144, 145, 147, 148, 174, 179, 189, 194, 195, 197, 198, 204, 214, 219, 220]

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

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