A181619 - cp's OEIS frontend

A181619 Numbers k such that k^2+1 = 2p,(k+1)^2+1 = 5q, (k+2)^2+1 = 10r where p, q, and r are primes.

n	a(n)
1	11
2	51
3	61
4	101
5	221
6	261
7	571
8	2271
9	2821
10	2871
11	5071
12	5651
13	5761
14	6561
15	6951
16	9751
17	10461
18	10851
19	11621
20	11711
21	14961
22	15911
23	16551
24	17171
25	17601
26	18511
27	19071
28	19551
29	23151
30	25261
31	27351
32	27751

[11, 51, 61, 101, 221, 261, 571, 2271, 2821, 2871, 5071, 5651, 5761, 6561, 6951, 9751, 10461, 10851, 11621, 11711, 14961, 15911, 16551, 17171, 17601, 18511, 19071, 19551, 23151, 25261, 27351, 27751]

cp's OEIS Frontend

A181619 Numbers k such that k^2+1 = 2p,(k+1)^2+1 = 5q, (k+2)^2+1 = 10r where p, q, and r are primes.

Table of values

List of values