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.

A231372 Squarefree composite numbers k such that 10 is a primitive root for all prime factors of k.

Table of values

n a(n)
1 119
2 133
3 161
4 203
5 323
6 329
7 391
8 413
9 427
10 437
11 493
12 551
13 667
14 679
15 763
16 791
17 799
18 893
19 917
20 1003
21 1037
22 1043
23 1081
24 1121
25 1159
26 1169
27 1253
28 1267
29 1351
30 1357
31 1363
32 1403
33 1561
34 1603
35 1631
36 1649
37 1711
38 1769
39 1799
40 1841
41 1843
42 1853
43 1883
44 1921
45 2071
46 2147
47 2191

List of values

[119, 133, 161, 203, 323, 329, 391, 413, 427, 437, 493, 551, 667, 679, 763, 791, 799, 893, 917, 1003, 1037, 1043, 1081, 1121, 1159, 1169, 1253, 1267, 1351, 1357, 1363, 1403, 1561, 1603, 1631, 1649, 1711, 1769, 1799, 1841, 1843, 1853, 1883, 1921, 2071, 2147, 2191]

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

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