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.

A245017 Numbers k such that (product of digits of k) + 1 and (product of digits of k)^2 + 1 are both prime.

Table of values

n a(n)
1 1
2 2
3 4
4 6
5 11
6 12
7 14
8 16
9 21
10 22
11 23
12 25
13 28
14 32
15 41
16 44
17 49
18 52
19 58
20 61
21 66
22 82
23 85
24 94
25 111
26 112
27 114
28 116
29 121
30 122
31 123
32 125
33 128
34 132
35 141
36 144
37 149
38 152
39 158
40 161
41 166
42 182
43 185
44 194
45 211
46 212
47 213
48 215
49 218
50 221
51 224
52 229
53 231
54 236
55 242
56 245
57 251
58 254
59 263
60 279
61 281
62 292

List of values

[1, 2, 4, 6, 11, 12, 14, 16, 21, 22, 23, 25, 28, 32, 41, 44, 49, 52, 58, 61, 66, 82, 85, 94, 111, 112, 114, 116, 121, 122, 123, 125, 128, 132, 141, 144, 149, 152, 158, 161, 166, 182, 185, 194, 211, 212, 213, 215, 218, 221, 224, 229, 231, 236, 242, 245, 251, 254, 263, 279, 281, 292]

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

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