A212604 - cp's OEIS frontend

A212604 a(n) is the smallest prime such that it and the previous three primes are all of the form x^2 + n * y^2.

n	a(n)
1	409
2	577
3	1759
4	409
5	55049
6	1783
7	127
8	20873
9	12889
10	6529
11	4943
12	12889
13	3461
14	138041
15	46411
16	20873
17	115013
18	7417
19	4919
20	158209
21	8490721
22	7177
23	15787
24	4967401
25	55049
26	383393
27	76597
28	5273
29	252541
30	10448401
31	2543
32	577193

[409, 577, 1759, 409, 55049, 1783, 127, 20873, 12889, 6529, 4943, 12889, 3461, 138041, 46411, 20873, 115013, 7417, 4919, 158209, 8490721, 7177, 15787, 4967401, 55049, 383393, 76597, 5273, 252541, 10448401, 2543, 577193]

cp's OEIS Frontend

A212604 a(n) is the smallest prime such that it and the previous three primes are all of the form x^2 + n * y^2.

Table of values

List of values