A287930 - cp's OEIS frontend

A287930 Numbers m such that for any positive integers (x, y), if x * y = m where x <= y, then x^2 + 2*y^2 is a prime number.

n	a(n)
1	1
2	3
3	21
4	33
5	93
6	105
7	123
8	177
9	219
10	237
11	321
12	417
13	489
14	537
15	633
16	699
17	813
18	951
19	1011
20	1299
21	1419
22	1641
23	1923
24	1959
25	2073
26	2211
27	2433
28	2661
29	3387
30	3453
31	3489
32	3741
33	3981
34	4083
35	4377
36	4461
37	4467
38	4827
39	4911
40	5007
41	5997
42	6423
43	6621
44	7467
45	7647
46	7881
47	8031
48	8061

[1, 3, 21, 33, 93, 105, 123, 177, 219, 237, 321, 417, 489, 537, 633, 699, 813, 951, 1011, 1299, 1419, 1641, 1923, 1959, 2073, 2211, 2433, 2661, 3387, 3453, 3489, 3741, 3981, 4083, 4377, 4461, 4467, 4827, 4911, 5007, 5997, 6423, 6621, 7467, 7647, 7881, 8031, 8061]

cp's OEIS Frontend

A287930 Numbers m such that for any positive integers (x, y), if x * y = m where x <= y, then x^2 + 2*y^2 is a prime number.

Table of values

List of values