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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.

A055126 Base-16 complement of n (write n in base 16, then replace each digit with its base-16 negative).

Table of values

n a(n)
0 0
1 15
2 14
3 13
4 12
5 11
6 10
7 9
8 8
9 7
10 6
11 5
12 4
13 3
14 2
15 1
16 240
17 255
18 254
19 253
20 252
21 251
22 250
23 249
24 248
25 247
26 246
27 245
28 244
29 243
30 242
31 241
32 224
33 239
34 238
35 237
36 236
37 235
38 234
39 233
40 232
41 231
42 230
43 229
44 228
45 227
46 226
47 225
48 208
49 223
50 222
51 221
52 220
53 219
54 218
55 217
56 216
57 215

List of values

[0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 240, 255, 254, 253, 252, 251, 250, 249, 248, 247, 246, 245, 244, 243, 242, 241, 224, 239, 238, 237, 236, 235, 234, 233, 232, 231, 230, 229, 228, 227, 226, 225, 208, 223, 222, 221, 220, 219, 218, 217, 216, 215]

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

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