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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.

A083984 If k is a number with exactly two distinct decimal digits, say a and b, neither of which is 0 (i.e., a member of A101594), define the self-complement of k, SC(k), to be the number obtained by replacing a with b and vice versa. E.g. SC(232233) = 323322. Sequence contains numbers n such that n and SC(n) are relatively prime.

Table of values

n a(n)
1 13
2 14
3 16
4 17
5 19
6 23
7 25
8 29
9 31
10 32
11 34
12 35
13 37
14 38
15 41
16 43
17 47
18 49
19 52
20 53
21 56
22 58
23 59
24 61
25 65
26 67
27 71
28 73
29 74
30 76
31 79
32 83
33 85
34 89
35 91
36 92
37 94
38 95
39 97
40 98
41 112
42 113
43 115
44 116
45 118
46 119
47 121
48 122
49 131
50 133
51 151
52 155
53 166
54 181
55 188
56 191
57 199
58 211
59 212
60 221
61 223
62 227

List of values

[13, 14, 16, 17, 19, 23, 25, 29, 31, 32, 34, 35, 37, 38, 41, 43, 47, 49, 52, 53, 56, 58, 59, 61, 65, 67, 71, 73, 74, 76, 79, 83, 85, 89, 91, 92, 94, 95, 97, 98, 112, 113, 115, 116, 118, 119, 121, 122, 131, 133, 151, 155, 166, 181, 188, 191, 199, 211, 212, 221, 223, 227]

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

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