A227938 - cp's OEIS frontend

A227938 List of those numbers which can be written as x + y + z (x, y, z > 0) such that all the six numbers 6x-1, 6y-1, 6z-1, 6x*y-1, 6xz-1 and 6yz-1 are Sophie Germain primes.

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	9
7	10
8	11
9	15
10	16
11	17
12	18
13	19
14	20
15	21
16	24
17	25
18	28
19	31
20	32
21	33
22	34
23	35
24	41
25	42
26	44
27	45
28	46
29	47
30	49
31	51
32	53
33	55
34	58
35	61
36	62
37	63
38	64
39	65
40	66
41	72
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	86
51	87
52	88
53	89
54	90
55	91
56	92
57	93
58	94
59	101
60	102

[3, 4, 5, 6, 7, 9, 10, 11, 15, 16, 17, 18, 19, 20, 21, 24, 25, 28, 31, 32, 33, 34, 35, 41, 42, 44, 45, 46, 47, 49, 51, 53, 55, 58, 61, 62, 63, 64, 65, 66, 72, 74, 75, 76, 77, 78, 79, 80, 84, 86, 87, 88, 89, 90, 91, 92, 93, 94, 101, 102]

cp's OEIS Frontend

A227938 List of those numbers which can be written as x + y + z (x, y, z > 0) such that all the six numbers 6x-1, 6y-1, 6z-1, 6x*y-1, 6xz-1 and 6yz-1 are Sophie Germain primes.

Table of values

List of values

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	9
7	10
8	11
9	15
10	16
11	17
12	18
13	19
14	20
15	21
16	24
17	25
18	28
19	31
20	32
21	33
22	34
23	35
24	41
25	42
26	44
27	45
28	46
29	47
30	49
31	51
32	53
33	55
34	58
35	61
36	62
37	63
38	64
39	65
40	66
41	72
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	86
51	87
52	88
53	89
54	90
55	91
56	92
57	93
58	94
59	101
60	102

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	9
7	10
8	11
9	15
10	16
11	17
12	18
13	19
14	20
15	21
16	24
17	25
18	28
19	31
20	32
21	33
22	34
23	35
24	41
25	42
26	44
27	45
28	46
29	47
30	49
31	51
32	53
33	55
34	58
35	61
36	62
37	63
38	64
39	65
40	66
41	72
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	86
51	87
52	88
53	89
54	90
55	91
56	92
57	93
58	94
59	101
60	102

cp's OEIS Frontend

A227938 List of those numbers which can be written as x + y + z (x, y, z > 0) such that all the six numbers 6*x-1, 6*y-1, 6*z-1, 6*x*y-1, 6*x*z-1 and 6*y*z-1 are Sophie Germain primes.

Table of values

List of values

A227938 List of those numbers which can be written as x + y + z (x, y, z > 0) such that all the six numbers 6x-1, 6y-1, 6z-1, 6x*y-1, 6xz-1 and 6yz-1 are Sophie Germain primes.

n	a(n)
1	3
2	4
3	5
4	6
5	7
6	9
7	10
8	11
9	15
10	16
11	17
12	18
13	19
14	20
15	21
16	24
17	25
18	28
19	31
20	32
21	33
22	34
23	35
24	41
25	42
26	44
27	45
28	46
29	47
30	49
31	51
32	53
33	55
34	58
35	61
36	62
37	63
38	64
39	65
40	66
41	72
42	74
43	75
44	76
45	77
46	78
47	79
48	80
49	84
50	86
51	87
52	88
53	89
54	90
55	91
56	92
57	93
58	94
59	101
60	102