A139501 - cp's OEIS frontend

A139501 Primes of the form x^2 + 21x*y + y^2 for x and y nonnegative.

n	a(n)
1	23
2	47
3	73
4	101
5	131
6	139
7	163
8	197
9	233
10	239
11	271
12	277
13	311
14	347
15	349
16	353
17	397
18	443
19	461
20	463
21	491
22	499
23	541
24	577
25	587
26	593
27	647
28	653
29	691
30	719
31	739
32	761
33	809
34	821
35	823
36	853
37	859
38	883
39	929
40	947
41	967
42	997
43	1013
44	1051
45	1061
46	1087
47	1151
48	1163
49	1223
50	1277

[23, 47, 73, 101, 131, 139, 163, 197, 233, 239, 271, 277, 311, 347, 349, 353, 397, 443, 461, 463, 491, 499, 541, 577, 587, 593, 647, 653, 691, 719, 739, 761, 809, 821, 823, 853, 859, 883, 929, 947, 967, 997, 1013, 1051, 1061, 1087, 1151, 1163, 1223, 1277]

cp's OEIS Frontend

A139501 Primes of the form x^2 + 21x*y + y^2 for x and y nonnegative.

Table of values

List of values