A306685 - cp's OEIS frontend

A306685 Composite squarefree numbers k such that k^2-1 is divisible by p-1 and p+1, where p are all the prime factors of k.

n	a(n)
1	35
2	1189
3	3059
4	6479
5	8569
6	30889
7	39689
8	51271
9	84419
10	133399
11	272251
12	321265
13	430199
14	544159
15	564719
16	569449
17	585311
18	608399
19	1033241
20	1212751
21	1930499
22	3131029
23	7056721
24	7110179
25	7639919
26	8740601
27	11255201
28	15857855
29	17966519
30	18996769
31	22427999
32	32871761
33	34966009

[35, 1189, 3059, 6479, 8569, 30889, 39689, 51271, 84419, 133399, 272251, 321265, 430199, 544159, 564719, 569449, 585311, 608399, 1033241, 1212751, 1930499, 3131029, 7056721, 7110179, 7639919, 8740601, 11255201, 15857855, 17966519, 18996769, 22427999, 32871761, 34966009]

cp's OEIS Frontend

A306685 Composite squarefree numbers k such that k^2-1 is divisible by p-1 and p+1, where p are all the prime factors of k.

Table of values

List of values