A086696 - cp's OEIS frontend

A086696 Least k such that A056830(n) + k is semiprime, where A056830 = alternate digits 1 and 0.

n	a(n)
1	3
2	0
3	5
4	1
5	1
6	1
7	1
8	1
9	5
10	3
11	2
12	5
13	6
14	21
15	2
16	9
17	2
18	8
19	4
20	1
21	5
22	9
23	34
24	23
25	4
26	12
27	5
28	8
29	17
30	9
31	10
32	1
33	12
34	11
35	10
36	3
37	0
38	37
39	26
40	3
41	20
42	29
43	16
44	21
45	38
46	41
47	18
48	11
49	6
50	21
51	8
52	7
53	2
54	31
55	30
56	12
57	38
58	69
59	2
60	27

[3, 0, 5, 1, 1, 1, 1, 1, 5, 3, 2, 5, 6, 21, 2, 9, 2, 8, 4, 1, 5, 9, 34, 23, 4, 12, 5, 8, 17, 9, 10, 1, 12, 11, 10, 3, 0, 37, 26, 3, 20, 29, 16, 21, 38, 41, 18, 11, 6, 21, 8, 7, 2, 31, 30, 12, 38, 69, 2, 27]

cp's OEIS Frontend

A086696 Least k such that A056830(n) + k is semiprime, where A056830 = alternate digits 1 and 0.

Table of values

List of values

n	a(n)
1	3
2	0
3	5
4	1
5	1
6	1
7	1
8	1
9	5
10	3
11	2
12	5
13	6
14	21
15	2
16	9
17	2
18	8
19	4
20	1
21	5
22	9
23	34
24	23
25	4
26	12
27	5
28	8
29	17
30	9
31	10
32	1
33	12
34	11
35	10
36	3
37	0
38	37
39	26
40	3
41	20
42	29
43	16
44	21
45	38
46	41
47	18
48	11
49	6
50	21
51	8
52	7
53	2
54	31
55	30
56	12
57	38
58	69
59	2
60	27

n	a(n)
1	3
2	0
3	5
4	1
5	1
6	1
7	1
8	1
9	5
10	3
11	2
12	5
13	6
14	21
15	2
16	9
17	2
18	8
19	4
20	1
21	5
22	9
23	34
24	23
25	4
26	12
27	5
28	8
29	17
30	9
31	10
32	1
33	12
34	11
35	10
36	3
37	0
38	37
39	26
40	3
41	20
42	29
43	16
44	21
45	38
46	41
47	18
48	11
49	6
50	21
51	8
52	7
53	2
54	31
55	30
56	12
57	38
58	69
59	2
60	27

n	a(n)
1	3
2	0
3	5
4	1
5	1
6	1
7	1
8	1
9	5
10	3
11	2
12	5
13	6
14	21
15	2
16	9
17	2
18	8
19	4
20	1
21	5
22	9
23	34
24	23
25	4
26	12
27	5
28	8
29	17
30	9
31	10
32	1
33	12
34	11
35	10
36	3
37	0
38	37
39	26
40	3
41	20
42	29
43	16
44	21
45	38
46	41
47	18
48	11
49	6
50	21
51	8
52	7
53	2
54	31
55	30
56	12
57	38
58	69
59	2
60	27