A335641 - cp's OEIS frontend

A335641 Number of ordered ways to write 2n+1 as p + x*(9x+7) with p prime and x an integer.

n	a(n)
1	1
2	2
3	2
4	1
5	1
6	2
7	1
8	1
9	3
10	2
11	2
12	2
13	2
14	3
15	2
16	3
17	2
18	1
19	3
20	2
21	2
22	3
23	2
24	1
25	1
26	4
27	2
28	2
29	3
30	3
31	5
32	2
33	3
34	4
35	2
36	4
37	3
38	2
39	3
40	3
41	4
42	1
43	2
44	4
45	3
46	2
47	2
48	3
49	2
50	3
51	4
52	4
53	3
54	4
55	3
56	4
57	2
58	2
59	5
60	4
61	4
62	3
63	3
64	5
65	4
66	5
67	2
68	1
69	6
70	1
71	3
72	2
73	3
74	4
75	3
76	5
77	2
78	4
79	4
80	3
81	5
82	2
83	3
84	4
85	1
86	5
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	5
95	4
96	3
97	6
98	4
99	6
100	5

[1, 2, 2, 1, 1, 2, 1, 1, 3, 2, 2, 2, 2, 3, 2, 3, 2, 1, 3, 2, 2, 3, 2, 1, 1, 4, 2, 2, 3, 3, 5, 2, 3, 4, 2, 4, 3, 2, 3, 3, 4, 1, 2, 4, 3, 2, 2, 3, 2, 3, 4, 4, 3, 4, 3, 4, 2, 2, 5, 4, 4, 3, 3, 5, 4, 5, 2, 1, 6, 1, 3, 2, 3, 4, 3, 5, 2, 4, 4, 3, 5, 2, 3, 4, 1, 5, 4, 3, 4, 4, 4, 3, 3, 5, 4, 3, 6, 4, 6, 5]

cp's OEIS Frontend

A335641 Number of ordered ways to write 2n+1 as p + x*(9x+7) with p prime and x an integer.

Table of values

List of values

n	a(n)
1	1
2	2
3	2
4	1
5	1
6	2
7	1
8	1
9	3
10	2
11	2
12	2
13	2
14	3
15	2
16	3
17	2
18	1
19	3
20	2
21	2
22	3
23	2
24	1
25	1
26	4
27	2
28	2
29	3
30	3
31	5
32	2
33	3
34	4
35	2
36	4
37	3
38	2
39	3
40	3
41	4
42	1
43	2
44	4
45	3
46	2
47	2
48	3
49	2
50	3
51	4
52	4
53	3
54	4
55	3
56	4
57	2
58	2
59	5
60	4
61	4
62	3
63	3
64	5
65	4
66	5
67	2
68	1
69	6
70	1
71	3
72	2
73	3
74	4
75	3
76	5
77	2
78	4
79	4
80	3
81	5
82	2
83	3
84	4
85	1
86	5
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	5
95	4
96	3
97	6
98	4
99	6
100	5

n	a(n)
1	1
2	2
3	2
4	1
5	1
6	2
7	1
8	1
9	3
10	2
11	2
12	2
13	2
14	3
15	2
16	3
17	2
18	1
19	3
20	2
21	2
22	3
23	2
24	1
25	1
26	4
27	2
28	2
29	3
30	3
31	5
32	2
33	3
34	4
35	2
36	4
37	3
38	2
39	3
40	3
41	4
42	1
43	2
44	4
45	3
46	2
47	2
48	3
49	2
50	3
51	4
52	4
53	3
54	4
55	3
56	4
57	2
58	2
59	5
60	4
61	4
62	3
63	3
64	5
65	4
66	5
67	2
68	1
69	6
70	1
71	3
72	2
73	3
74	4
75	3
76	5
77	2
78	4
79	4
80	3
81	5
82	2
83	3
84	4
85	1
86	5
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	5
95	4
96	3
97	6
98	4
99	6
100	5

n	a(n)
1	1
2	2
3	2
4	1
5	1
6	2
7	1
8	1
9	3
10	2
11	2
12	2
13	2
14	3
15	2
16	3
17	2
18	1
19	3
20	2
21	2
22	3
23	2
24	1
25	1
26	4
27	2
28	2
29	3
30	3
31	5
32	2
33	3
34	4
35	2
36	4
37	3
38	2
39	3
40	3
41	4
42	1
43	2
44	4
45	3
46	2
47	2
48	3
49	2
50	3
51	4
52	4
53	3
54	4
55	3
56	4
57	2
58	2
59	5
60	4
61	4
62	3
63	3
64	5
65	4
66	5
67	2
68	1
69	6
70	1
71	3
72	2
73	3
74	4
75	3
76	5
77	2
78	4
79	4
80	3
81	5
82	2
83	3
84	4
85	1
86	5
87	4
88	3
89	4
90	4
91	4
92	3
93	3
94	5
95	4
96	3
97	6
98	4
99	6
100	5