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.

A181559 Numbers with three distinct prime factors (each of which may or may not be repeated) which when concatenated in any order form a prime number.

Table of values

n a(n)
1 3311
2 23177
3 27181
4 32153
5 36421
6 41237
7 53977
8 86507
9 110971
10 125069
11 142373
12 162239
13 190267
14 208579
15 254947
16 256413
17 288659
18 298991
19 353683
20 377839
21 400631
22 500981
23 543337
24 593747
25 769239
26 776797
27 853811
28 875483
29 901949
30 964481
31 996611
32 1053787
33 1135673

List of values

[3311, 23177, 27181, 32153, 36421, 41237, 53977, 86507, 110971, 125069, 142373, 162239, 190267, 208579, 254947, 256413, 288659, 298991, 353683, 377839, 400631, 500981, 543337, 593747, 769239, 776797, 853811, 875483, 901949, 964481, 996611, 1053787, 1135673]

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

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