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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.

A055120 Digital complement of n (replace each nonzero digit d with 10-d).

Table of values

n a(n)
0 0
1 9
2 8
3 7
4 6
5 5
6 4
7 3
8 2
9 1
10 90
11 99
12 98
13 97
14 96
15 95
16 94
17 93
18 92
19 91
20 80
21 89
22 88
23 87
24 86
25 85
26 84
27 83
28 82
29 81
30 70
31 79
32 78
33 77
34 76
35 75
36 74
37 73
38 72
39 71
40 60
41 69
42 68
43 67
44 66
45 65
46 64
47 63
48 62
49 61
50 50
51 59
52 58
53 57
54 56
55 55
56 54
57 53
58 52
59 51
60 40
61 49
62 48
63 47
64 46
65 45
66 44
67 43
68 42
69 41
70 30
71 39

List of values

[0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 90, 99, 98, 97, 96, 95, 94, 93, 92, 91, 80, 89, 88, 87, 86, 85, 84, 83, 82, 81, 70, 79, 78, 77, 76, 75, 74, 73, 72, 71, 60, 69, 68, 67, 66, 65, 64, 63, 62, 61, 50, 59, 58, 57, 56, 55, 54, 53, 52, 51, 40, 49, 48, 47, 46, 45, 44, 43, 42, 41, 30, 39]

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

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