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.

A256353 Composites in base 10 that remain composite in exactly five bases b, 2 <= b <= 10, expansions interpreted as decimal numbers.

Table of values

n a(n)
1 55
2 169
3 247
4 253
5 323
6 493
7 529
8 556
9 671
10 1027
11 1111
12 1243
13 1261
14 1339
15 1375
16 1711
17 1751
18 1803
19 2185
20 2413
21 2431
22 2881
23 3193
24 4381
25 4417
26 4843
27 5029
28 5203
29 5251
30 6631
31 7093
32 7999
33 8515
34 8653
35 9271
36 9307
37 9481
38 9523
39 9593
40 9727
41 9745
42 9937
43 9955
44 10393
45 10555

List of values

[55, 169, 247, 253, 323, 493, 529, 556, 671, 1027, 1111, 1243, 1261, 1339, 1375, 1711, 1751, 1803, 2185, 2413, 2431, 2881, 3193, 4381, 4417, 4843, 5029, 5203, 5251, 6631, 7093, 7999, 8515, 8653, 9271, 9307, 9481, 9523, 9593, 9727, 9745, 9937, 9955, 10393, 10555]

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

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