A256385 - cp's OEIS frontend

A256385 Numbers n such that 2n^2+2n+1, 3n^2+6n+5, 6n^2+30n+55 are all composite.

n	a(n)
1	8
2	10
3	11
4	15
5	16
6	20
7	26
8	27
9	28
10	31
11	33
12	36
13	37
14	40
15	41
16	43
17	44
18	45
19	46
20	49
21	53
22	54
23	55
24	57
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	73
33	74
34	75
35	77
36	78
37	80
38	83
39	88
40	89
41	91
42	92
43	93
44	95
45	98
46	101
47	103
48	105
49	106
50	107
51	108
52	111
53	112
54	113
55	114
56	116
57	117
58	118
59	120
60	121
61	123

[8, 10, 11, 15, 16, 20, 26, 27, 28, 31, 33, 36, 37, 40, 41, 43, 44, 45, 46, 49, 53, 54, 55, 57, 58, 59, 61, 64, 67, 68, 71, 73, 74, 75, 77, 78, 80, 83, 88, 89, 91, 92, 93, 95, 98, 101, 103, 105, 106, 107, 108, 111, 112, 113, 114, 116, 117, 118, 120, 121, 123]

cp's OEIS Frontend

A256385 Numbers n such that 2n^2+2n+1, 3n^2+6n+5, 6n^2+30n+55 are all composite.

Table of values

List of values

n	a(n)
1	8
2	10
3	11
4	15
5	16
6	20
7	26
8	27
9	28
10	31
11	33
12	36
13	37
14	40
15	41
16	43
17	44
18	45
19	46
20	49
21	53
22	54
23	55
24	57
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	73
33	74
34	75
35	77
36	78
37	80
38	83
39	88
40	89
41	91
42	92
43	93
44	95
45	98
46	101
47	103
48	105
49	106
50	107
51	108
52	111
53	112
54	113
55	114
56	116
57	117
58	118
59	120
60	121
61	123

n	a(n)
1	8
2	10
3	11
4	15
5	16
6	20
7	26
8	27
9	28
10	31
11	33
12	36
13	37
14	40
15	41
16	43
17	44
18	45
19	46
20	49
21	53
22	54
23	55
24	57
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	73
33	74
34	75
35	77
36	78
37	80
38	83
39	88
40	89
41	91
42	92
43	93
44	95
45	98
46	101
47	103
48	105
49	106
50	107
51	108
52	111
53	112
54	113
55	114
56	116
57	117
58	118
59	120
60	121
61	123

n	a(n)
1	8
2	10
3	11
4	15
5	16
6	20
7	26
8	27
9	28
10	31
11	33
12	36
13	37
14	40
15	41
16	43
17	44
18	45
19	46
20	49
21	53
22	54
23	55
24	57
25	58
26	59
27	61
28	64
29	67
30	68
31	71
32	73
33	74
34	75
35	77
36	78
37	80
38	83
39	88
40	89
41	91
42	92
43	93
44	95
45	98
46	101
47	103
48	105
49	106
50	107
51	108
52	111
53	112
54	113
55	114
56	116
57	117
58	118
59	120
60	121
61	123