A211769 - cp's OEIS frontend

A211769 Greater of twin primes p, p+2 with unique values of sigma(p) and sigma(p+2); sigma(n) = A000203(n) = sum of divisors of n.

n	a(n)
1	5
2	7
3	199
4	283
5	349
6	463
7	643
8	823
9	859
10	1291
11	1699
12	1723
13	1789
14	1879
15	2083
16	2143
17	2383
18	2551
19	2803
20	3259
21	3541
22	3559
23	3931
24	4021
25	4243
26	4639
27	4723
28	5443
29	5479
30	5503
31	5659
32	6451
33	6691
34	6703
35	6763
36	6829
37	6949
38	7459
39	7591
40	7879
41	8011
42	8389
43	8539
44	8599
45	8629

[5, 7, 199, 283, 349, 463, 643, 823, 859, 1291, 1699, 1723, 1789, 1879, 2083, 2143, 2383, 2551, 2803, 3259, 3541, 3559, 3931, 4021, 4243, 4639, 4723, 5443, 5479, 5503, 5659, 6451, 6691, 6703, 6763, 6829, 6949, 7459, 7591, 7879, 8011, 8389, 8539, 8599, 8629]

cp's OEIS Frontend

A211769 Greater of twin primes p, p+2 with unique values of sigma(p) and sigma(p+2); sigma(n) = A000203(n) = sum of divisors of n.

Table of values

List of values