A105052 - cp's OEIS frontend

A105052 Write a(n) as a four-bit number; those bits state whether 10n+1, 10n+3, 10n+7 and 10n+9 are primes.

n	a(n)
0	6
1	15
2	5
3	10
4	14
5	5
6	10
7	13
8	5
9	2
10	15
11	4
12	2
13	11
14	1
15	10
16	6
17	5
18	8
19	15
20	0
21	8
22	7
23	5
24	8
25	10
26	5
27	10
28	12
29	4
30	2
31	14
32	0
33	10
34	3
35	5
36	2
37	5
38	5
39	2
40	9
41	1
42	8
43	13
44	5
45	2
46	14
47	1
48	2
49	9
50	5
51	0
52	12
53	0
54	10
55	2
56	5
57	10
58	2
59	5
60	10
61	7
62	0
63	8
64	14
65	5
66	8
67	6
68	4
69	8
70	9
71	1
72	2
73	5
74	4
75	10
76	9
77	4
78	2
79	2
80	1
81	8
82	15
83	1
84	0
85	7
86	4
87	2
88	14
89	0
90	2
91	9
92	1
93	2

[6, 15, 5, 10, 14, 5, 10, 13, 5, 2, 15, 4, 2, 11, 1, 10, 6, 5, 8, 15, 0, 8, 7, 5, 8, 10, 5, 10, 12, 4, 2, 14, 0, 10, 3, 5, 2, 5, 5, 2, 9, 1, 8, 13, 5, 2, 14, 1, 2, 9, 5, 0, 12, 0, 10, 2, 5, 10, 2, 5, 10, 7, 0, 8, 14, 5, 8, 6, 4, 8, 9, 1, 2, 5, 4, 10, 9, 4, 2, 2, 1, 8, 15, 1, 0, 7, 4, 2, 14, 0, 2, 9, 1, 2]

cp's OEIS Frontend

A105052 Write a(n) as a four-bit number; those bits state whether 10n+1, 10n+3, 10n+7 and 10n+9 are primes.

Table of values

List of values

n	a(n)
0	6
1	15
2	5
3	10
4	14
5	5
6	10
7	13
8	5
9	2
10	15
11	4
12	2
13	11
14	1
15	10
16	6
17	5
18	8
19	15
20	0
21	8
22	7
23	5
24	8
25	10
26	5
27	10
28	12
29	4
30	2
31	14
32	0
33	10
34	3
35	5
36	2
37	5
38	5
39	2
40	9
41	1
42	8
43	13
44	5
45	2
46	14
47	1
48	2
49	9
50	5
51	0
52	12
53	0
54	10
55	2
56	5
57	10
58	2
59	5
60	10
61	7
62	0
63	8
64	14
65	5
66	8
67	6
68	4
69	8
70	9
71	1
72	2
73	5
74	4
75	10
76	9
77	4
78	2
79	2
80	1
81	8
82	15
83	1
84	0
85	7
86	4
87	2
88	14
89	0
90	2
91	9
92	1
93	2

n	a(n)
0	6
1	15
2	5
3	10
4	14
5	5
6	10
7	13
8	5
9	2
10	15
11	4
12	2
13	11
14	1
15	10
16	6
17	5
18	8
19	15
20	0
21	8
22	7
23	5
24	8
25	10
26	5
27	10
28	12
29	4
30	2
31	14
32	0
33	10
34	3
35	5
36	2
37	5
38	5
39	2
40	9
41	1
42	8
43	13
44	5
45	2
46	14
47	1
48	2
49	9
50	5
51	0
52	12
53	0
54	10
55	2
56	5
57	10
58	2
59	5
60	10
61	7
62	0
63	8
64	14
65	5
66	8
67	6
68	4
69	8
70	9
71	1
72	2
73	5
74	4
75	10
76	9
77	4
78	2
79	2
80	1
81	8
82	15
83	1
84	0
85	7
86	4
87	2
88	14
89	0
90	2
91	9
92	1
93	2

n	a(n)
0	6
1	15
2	5
3	10
4	14
5	5
6	10
7	13
8	5
9	2
10	15
11	4
12	2
13	11
14	1
15	10
16	6
17	5
18	8
19	15
20	0
21	8
22	7
23	5
24	8
25	10
26	5
27	10
28	12
29	4
30	2
31	14
32	0
33	10
34	3
35	5
36	2
37	5
38	5
39	2
40	9
41	1
42	8
43	13
44	5
45	2
46	14
47	1
48	2
49	9
50	5
51	0
52	12
53	0
54	10
55	2
56	5
57	10
58	2
59	5
60	10
61	7
62	0
63	8
64	14
65	5
66	8
67	6
68	4
69	8
70	9
71	1
72	2
73	5
74	4
75	10
76	9
77	4
78	2
79	2
80	1
81	8
82	15
83	1
84	0
85	7
86	4
87	2
88	14
89	0
90	2
91	9
92	1
93	2