A127018 - cp's OEIS frontend

A127018 Least s with s, t both semiprime and s+2n = t.

n	a(n)
1	4
2	6
3	4
4	6
5	4
6	9
7	21
8	6
9	4
10	6
11	4
12	9
13	9
14	6
15	4
16	6
17	4
18	10
19	39
20	6
21	4
22	14
23	9
24	9
25	15
26	6
27	4
28	6
29	4
30	9
31	15
32	10
33	21
34	6
35	4
36	10
37	21
38	6
39	4
40	6
41	4
42	9
43	9
44	6
45	4
46	14
47	21
48	10
49	21
50	6
51	4
52	14
53	9
54	10
55	9
56	6
57	4
58	6
59	4
60	9
61	21
62	9
63	15
64	6
65	4
66	9
67	9
68	6
69	4
70	6
71	4
72	14
73	9
74	10
75	9
76	6
77	4
78	10
79	25
80	6
81	4
82	14
83	21
84	9
85	15
86	6
87	4
88	9
89	9
90	14
91	21
92	10

[4, 6, 4, 6, 4, 9, 21, 6, 4, 6, 4, 9, 9, 6, 4, 6, 4, 10, 39, 6, 4, 14, 9, 9, 15, 6, 4, 6, 4, 9, 15, 10, 21, 6, 4, 10, 21, 6, 4, 6, 4, 9, 9, 6, 4, 14, 21, 10, 21, 6, 4, 14, 9, 10, 9, 6, 4, 6, 4, 9, 21, 9, 15, 6, 4, 9, 9, 6, 4, 6, 4, 14, 9, 10, 9, 6, 4, 10, 25, 6, 4, 14, 21, 9, 15, 6, 4, 9, 9, 14, 21, 10]

cp's OEIS Frontend

A127018 Least s with s, t both semiprime and s+2n = t.

Table of values

List of values

n	a(n)
1	4
2	6
3	4
4	6
5	4
6	9
7	21
8	6
9	4
10	6
11	4
12	9
13	9
14	6
15	4
16	6
17	4
18	10
19	39
20	6
21	4
22	14
23	9
24	9
25	15
26	6
27	4
28	6
29	4
30	9
31	15
32	10
33	21
34	6
35	4
36	10
37	21
38	6
39	4
40	6
41	4
42	9
43	9
44	6
45	4
46	14
47	21
48	10
49	21
50	6
51	4
52	14
53	9
54	10
55	9
56	6
57	4
58	6
59	4
60	9
61	21
62	9
63	15
64	6
65	4
66	9
67	9
68	6
69	4
70	6
71	4
72	14
73	9
74	10
75	9
76	6
77	4
78	10
79	25
80	6
81	4
82	14
83	21
84	9
85	15
86	6
87	4
88	9
89	9
90	14
91	21
92	10

n	a(n)
1	4
2	6
3	4
4	6
5	4
6	9
7	21
8	6
9	4
10	6
11	4
12	9
13	9
14	6
15	4
16	6
17	4
18	10
19	39
20	6
21	4
22	14
23	9
24	9
25	15
26	6
27	4
28	6
29	4
30	9
31	15
32	10
33	21
34	6
35	4
36	10
37	21
38	6
39	4
40	6
41	4
42	9
43	9
44	6
45	4
46	14
47	21
48	10
49	21
50	6
51	4
52	14
53	9
54	10
55	9
56	6
57	4
58	6
59	4
60	9
61	21
62	9
63	15
64	6
65	4
66	9
67	9
68	6
69	4
70	6
71	4
72	14
73	9
74	10
75	9
76	6
77	4
78	10
79	25
80	6
81	4
82	14
83	21
84	9
85	15
86	6
87	4
88	9
89	9
90	14
91	21
92	10

n	a(n)
1	4
2	6
3	4
4	6
5	4
6	9
7	21
8	6
9	4
10	6
11	4
12	9
13	9
14	6
15	4
16	6
17	4
18	10
19	39
20	6
21	4
22	14
23	9
24	9
25	15
26	6
27	4
28	6
29	4
30	9
31	15
32	10
33	21
34	6
35	4
36	10
37	21
38	6
39	4
40	6
41	4
42	9
43	9
44	6
45	4
46	14
47	21
48	10
49	21
50	6
51	4
52	14
53	9
54	10
55	9
56	6
57	4
58	6
59	4
60	9
61	21
62	9
63	15
64	6
65	4
66	9
67	9
68	6
69	4
70	6
71	4
72	14
73	9
74	10
75	9
76	6
77	4
78	10
79	25
80	6
81	4
82	14
83	21
84	9
85	15
86	6
87	4
88	9
89	9
90	14
91	21
92	10