A276317 - cp's OEIS frontend

A276317 a(n) = b(n)/c(n) where b(n) = smallest positive k such that (2k)^2 + 2n - 1 is prime and c(n) = gcd(n,3) = A109007(n).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	2
12	1
13	1
14	1
15	2
16	2
17	1
18	1
19	1
20	1
21	4
22	1
23	2
24	1
25	1
26	2
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	2
38	1
39	1
40	1
41	2
42	2
43	1
44	2
45	2
46	2
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	2
55	1
56	2
57	1
58	2
59	4
60	2
61	2
62	1
63	2
64	1
65	4
66	1
67	1
68	1
69	1
70	5
71	2
72	1
73	1
74	1
75	2
76	2
77	1
78	1
79	2
80	1
81	1
82	1
83	2
84	2
85	1
86	5
87	2
88	1
89	1
90	3
91	2
92	2
93	3
94	1
95	1
96	1
97	1

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 1, 1, 1, 4, 1, 2, 1, 1, 2, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 2, 2, 1, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 2, 1, 2, 1, 2, 4, 2, 2, 1, 2, 1, 4, 1, 1, 1, 1, 5, 2, 1, 1, 1, 2, 2, 1, 1, 2, 1, 1, 1, 2, 2, 1, 5, 2, 1, 1, 3, 2, 2, 3, 1, 1, 1, 1]

cp's OEIS Frontend

A276317 a(n) = b(n)/c(n) where b(n) = smallest positive k such that (2k)^2 + 2n - 1 is prime and c(n) = gcd(n,3) = A109007(n).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	2
12	1
13	1
14	1
15	2
16	2
17	1
18	1
19	1
20	1
21	4
22	1
23	2
24	1
25	1
26	2
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	2
38	1
39	1
40	1
41	2
42	2
43	1
44	2
45	2
46	2
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	2
55	1
56	2
57	1
58	2
59	4
60	2
61	2
62	1
63	2
64	1
65	4
66	1
67	1
68	1
69	1
70	5
71	2
72	1
73	1
74	1
75	2
76	2
77	1
78	1
79	2
80	1
81	1
82	1
83	2
84	2
85	1
86	5
87	2
88	1
89	1
90	3
91	2
92	2
93	3
94	1
95	1
96	1
97	1

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	2
12	1
13	1
14	1
15	2
16	2
17	1
18	1
19	1
20	1
21	4
22	1
23	2
24	1
25	1
26	2
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	2
38	1
39	1
40	1
41	2
42	2
43	1
44	2
45	2
46	2
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	2
55	1
56	2
57	1
58	2
59	4
60	2
61	2
62	1
63	2
64	1
65	4
66	1
67	1
68	1
69	1
70	5
71	2
72	1
73	1
74	1
75	2
76	2
77	1
78	1
79	2
80	1
81	1
82	1
83	2
84	2
85	1
86	5
87	2
88	1
89	1
90	3
91	2
92	2
93	3
94	1
95	1
96	1
97	1

cp's OEIS Frontend

A276317 a(n) = b(n)/c(n) where b(n) = smallest positive k such that (2*k)^2 + 2*n - 1 is prime and c(n) = gcd(n,3) = A109007(n).

Table of values

List of values

A276317 a(n) = b(n)/c(n) where b(n) = smallest positive k such that (2k)^2 + 2n - 1 is prime and c(n) = gcd(n,3) = A109007(n).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	2
12	1
13	1
14	1
15	2
16	2
17	1
18	1
19	1
20	1
21	4
22	1
23	2
24	1
25	1
26	2
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	2
38	1
39	1
40	1
41	2
42	2
43	1
44	2
45	2
46	2
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	2
55	1
56	2
57	1
58	2
59	4
60	2
61	2
62	1
63	2
64	1
65	4
66	1
67	1
68	1
69	1
70	5
71	2
72	1
73	1
74	1
75	2
76	2
77	1
78	1
79	2
80	1
81	1
82	1
83	2
84	2
85	1
86	5
87	2
88	1
89	1
90	3
91	2
92	2
93	3
94	1
95	1
96	1
97	1