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.

A337803 Odd integers k not divisible by 5, such that dr(k) divides k-1 or k+1, where dr(k) is the additive digital root of k (A010888).

Table of values

n a(n)
1 1
2 11
3 13
4 17
5 19
6 29
7 31
8 37
9 41
10 43
11 47
12 49
13 59
14 67
15 71
16 73
17 83
18 89
19 91
20 97
21 101
22 103
23 109
24 119
25 121
26 127
27 131
28 137
29 139
30 143
31 149
32 157
33 161
34 163
35 169
36 173
37 181
38 191
39 193
40 199
41 209
42 211
43 217
44 221
45 223
46 227
47 229
48 233
49 239
50 247
51 253
52 263
53 271
54 281
55 283
56 287
57 289
58 299

List of values

[1, 11, 13, 17, 19, 29, 31, 37, 41, 43, 47, 49, 59, 67, 71, 73, 83, 89, 91, 97, 101, 103, 109, 119, 121, 127, 131, 137, 139, 143, 149, 157, 161, 163, 169, 173, 181, 191, 193, 199, 209, 211, 217, 221, 223, 227, 229, 233, 239, 247, 253, 263, 271, 281, 283, 287, 289, 299]

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

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