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.

A229290 n is in the sequence if n is prime, (n-1)/3^A007949(n-1) is a squarefree number, A007949(n-1) < 3 and every prime divisor of n-1 is in the sequence.

Table of values

n a(n)
1 2
2 3
3 7
4 19
5 43
6 127
7 2287
8 4903
9 5419
10 13723
11 14479
12 82339
13 98299
14 101347
15 304039
16 617767
17 688087
18 1676827
19 3735583
20 3736087
21 4130323
22 4324363
23 4693267
24 4951819
25 10621603
26 11032999
27 11208259
28 11554243
29 11737783
30 12198859
31 26152603
32 26563939
33 28159603

List of values

[2, 3, 7, 19, 43, 127, 2287, 4903, 5419, 13723, 14479, 82339, 98299, 101347, 304039, 617767, 688087, 1676827, 3735583, 3736087, 4130323, 4324363, 4693267, 4951819, 10621603, 11032999, 11208259, 11554243, 11737783, 12198859, 26152603, 26563939, 28159603]

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

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