A234541 - cp's OEIS frontend

A234541 Least k such that floor(n/k) + (n mod k) is a prime, or 0 if no such k exists.

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

[0, 1, 1, 2, 1, 2, 1, 4, 2, 2, 1, 4, 1, 2, 3, 8, 1, 6, 1, 4, 2, 2, 1, 8, 2, 2, 5, 4, 1, 6, 1, 6, 2, 2, 3, 12, 1, 2, 3, 8, 1, 6, 1, 4, 2, 2, 1, 16, 3, 10, 3, 4, 1, 18, 3, 6, 2, 2, 1, 8, 1, 2, 6, 18, 3, 6, 1, 4, 3, 4, 1, 14, 1, 2, 9, 4, 5, 6, 1, 16, 2, 2, 1, 12, 2, 2]

cp's OEIS Frontend

A234541 Least k such that floor(n/k) + (n mod k) is a prime, or 0 if no such k exists.

Table of values

List of values

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

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

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