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.

A321998 Numbers that cannot be written using eight 8's and operations +, -, * and/or /. Complement of A258069.

Table of values

n a(n)
1 91
2 93
3 101
4 107
5 109
6 115
7 141
8 147
9 149
10 155
11 157
12 163
13 166
14 173
15 174
16 178
17 179
18 205
19 206
20 210
21 211
22 214
23 218
24 221
25 222
26 223
27 226
28 227
29 229
30 230
31 231
32 233
33 234
34 235
35 236
36 237
37 243
38 245
39 251
40 261
41 267
42 269
43 275
44 276
45 277
46 278
47 279
48 281
49 282
50 283
51 285
52 286
53 287
54 290
55 291

List of values

[91, 93, 101, 107, 109, 115, 141, 147, 149, 155, 157, 163, 166, 173, 174, 178, 179, 205, 206, 210, 211, 214, 218, 221, 222, 223, 226, 227, 229, 230, 231, 233, 234, 235, 236, 237, 243, 245, 251, 261, 267, 269, 275, 276, 277, 278, 279, 281, 282, 283, 285, 286, 287, 290, 291]

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

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