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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.

A055948 n + reversal of base 4 digits of n (written in base 10).

Table of values

n a(n)
0 0
1 2
2 4
3 6
4 5
5 10
6 15
7 20
8 10
9 15
10 20
11 25
12 15
13 20
14 25
15 30
16 17
17 34
18 51
19 68
20 25
21 42
22 59
23 76
24 33
25 50
26 67
27 84
28 41
29 58
30 75
31 92
32 34
33 51
34 68
35 85
36 42
37 59
38 76
39 93
40 50
41 67
42 84
43 101
44 58
45 75
46 92
47 109
48 51
49 68
50 85
51 102
52 59
53 76
54 93
55 110
56 67
57 84
58 101
59 118
60 75
61 92
62 109
63 126
64 65
65 130
66 195

List of values

[0, 2, 4, 6, 5, 10, 15, 20, 10, 15, 20, 25, 15, 20, 25, 30, 17, 34, 51, 68, 25, 42, 59, 76, 33, 50, 67, 84, 41, 58, 75, 92, 34, 51, 68, 85, 42, 59, 76, 93, 50, 67, 84, 101, 58, 75, 92, 109, 51, 68, 85, 102, 59, 76, 93, 110, 67, 84, 101, 118, 75, 92, 109, 126, 65, 130, 195]

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

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