A028823 - cp's OEIS frontend

A028823 Numbers k such that k^2 + k + 17 is prime.

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	18
18	19
19	21
20	22
21	23
22	24
23	26
24	27
25	28
26	29
27	30
28	31
29	35
30	37
31	38
32	40
33	42
34	44
35	45
36	46
37	47
38	49
39	53
40	56
41	57
42	59
43	60
44	62
45	63
46	64
47	70
48	72
49	73
50	75
51	76
52	79
53	81
54	82
55	86
56	87
57	91
58	92
59	95
60	98
61	103
62	104
63	108
64	109
65	110
66	113
67	114

[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, 21, 22, 23, 24, 26, 27, 28, 29, 30, 31, 35, 37, 38, 40, 42, 44, 45, 46, 47, 49, 53, 56, 57, 59, 60, 62, 63, 64, 70, 72, 73, 75, 76, 79, 81, 82, 86, 87, 91, 92, 95, 98, 103, 104, 108, 109, 110, 113, 114]

cp's OEIS Frontend

A028823 Numbers k such that k^2 + k + 17 is prime.

Table of values

List of values

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	18
18	19
19	21
20	22
21	23
22	24
23	26
24	27
25	28
26	29
27	30
28	31
29	35
30	37
31	38
32	40
33	42
34	44
35	45
36	46
37	47
38	49
39	53
40	56
41	57
42	59
43	60
44	62
45	63
46	64
47	70
48	72
49	73
50	75
51	76
52	79
53	81
54	82
55	86
56	87
57	91
58	92
59	95
60	98
61	103
62	104
63	108
64	109
65	110
66	113
67	114

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	18
18	19
19	21
20	22
21	23
22	24
23	26
24	27
25	28
26	29
27	30
28	31
29	35
30	37
31	38
32	40
33	42
34	44
35	45
36	46
37	47
38	49
39	53
40	56
41	57
42	59
43	60
44	62
45	63
46	64
47	70
48	72
49	73
50	75
51	76
52	79
53	81
54	82
55	86
56	87
57	91
58	92
59	95
60	98
61	103
62	104
63	108
64	109
65	110
66	113
67	114

n	a(n)
1	0
2	1
3	2
4	3
5	4
6	5
7	6
8	7
9	8
10	9
11	10
12	11
13	12
14	13
15	14
16	15
17	18
18	19
19	21
20	22
21	23
22	24
23	26
24	27
25	28
26	29
27	30
28	31
29	35
30	37
31	38
32	40
33	42
34	44
35	45
36	46
37	47
38	49
39	53
40	56
41	57
42	59
43	60
44	62
45	63
46	64
47	70
48	72
49	73
50	75
51	76
52	79
53	81
54	82
55	86
56	87
57	91
58	92
59	95
60	98
61	103
62	104
63	108
64	109
65	110
66	113
67	114