A111251 - cp's OEIS frontend

A111251 Numbers k such that 3k^2 + 3k + 1 is prime.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	9
7	10
8	11
9	13
10	14
11	17
12	23
13	24
14	25
15	27
16	28
17	30
18	32
19	34
20	37
21	38
22	41
23	42
24	45
25	48
26	49
27	52
28	55
29	58
30	62
31	63
32	66
33	67
34	74
35	80
36	81
37	86
38	88
39	90
40	91
41	93
42	95
43	105
44	108
45	119
46	123
47	125
48	128
49	129
50	136
51	140
52	142
53	147
54	153
55	156
56	157
57	158
58	164
59	165
60	170
61	171
62	172
63	175

[1, 2, 3, 4, 6, 9, 10, 11, 13, 14, 17, 23, 24, 25, 27, 28, 30, 32, 34, 37, 38, 41, 42, 45, 48, 49, 52, 55, 58, 62, 63, 66, 67, 74, 80, 81, 86, 88, 90, 91, 93, 95, 105, 108, 119, 123, 125, 128, 129, 136, 140, 142, 147, 153, 156, 157, 158, 164, 165, 170, 171, 172, 175]

cp's OEIS Frontend

A111251 Numbers k such that 3k^2 + 3k + 1 is prime.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	9
7	10
8	11
9	13
10	14
11	17
12	23
13	24
14	25
15	27
16	28
17	30
18	32
19	34
20	37
21	38
22	41
23	42
24	45
25	48
26	49
27	52
28	55
29	58
30	62
31	63
32	66
33	67
34	74
35	80
36	81
37	86
38	88
39	90
40	91
41	93
42	95
43	105
44	108
45	119
46	123
47	125
48	128
49	129
50	136
51	140
52	142
53	147
54	153
55	156
56	157
57	158
58	164
59	165
60	170
61	171
62	172
63	175

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	9
7	10
8	11
9	13
10	14
11	17
12	23
13	24
14	25
15	27
16	28
17	30
18	32
19	34
20	37
21	38
22	41
23	42
24	45
25	48
26	49
27	52
28	55
29	58
30	62
31	63
32	66
33	67
34	74
35	80
36	81
37	86
38	88
39	90
40	91
41	93
42	95
43	105
44	108
45	119
46	123
47	125
48	128
49	129
50	136
51	140
52	142
53	147
54	153
55	156
56	157
57	158
58	164
59	165
60	170
61	171
62	172
63	175

cp's OEIS Frontend

A111251 Numbers k such that 3*k^2 + 3*k + 1 is prime.

Table of values

List of values

A111251 Numbers k such that 3k^2 + 3k + 1 is prime.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	9
7	10
8	11
9	13
10	14
11	17
12	23
13	24
14	25
15	27
16	28
17	30
18	32
19	34
20	37
21	38
22	41
23	42
24	45
25	48
26	49
27	52
28	55
29	58
30	62
31	63
32	66
33	67
34	74
35	80
36	81
37	86
38	88
39	90
40	91
41	93
42	95
43	105
44	108
45	119
46	123
47	125
48	128
49	129
50	136
51	140
52	142
53	147
54	153
55	156
56	157
57	158
58	164
59	165
60	170
61	171
62	172
63	175