A241424 - cp's OEIS frontend

A241424 Largest number k > 0 such that n - k! is prime, or 0 if no such k exists.

n	a(n)
1	0
2	0
3	1
4	2
5	2
6	1
7	2
8	3
9	3
10	0
11	3
12	1
13	3
14	1
15	2
16	0
17	3
18	1
19	3
20	1
21	2
22	0
23	3
24	1
25	3
26	4
27	4
28	0
29	4
30	1
31	4
32	1
33	2
34	0
35	4
36	0
37	4
38	1
39	2
40	0
41	4
42	1
43	4
44	1
45	2
46	0
47	4
48	1
49	3
50	0
51	0
52	0
53	4
54	1
55	4
56	0
57	0
58	0
59	3
60	1
61	4
62	1
63	2
64	0
65	4
66	0
67	4
68	1
69	2
70	0
71	4
72	1
73	3
74	1
75	2
76	0
77	4
78	0
79	3
80	1
81	2
82	0
83	4
84	1
85	4
86	0
87	0
88	0
89	3
90	1
91	4
92	0
93	0
94	0
95	4

[0, 0, 1, 2, 2, 1, 2, 3, 3, 0, 3, 1, 3, 1, 2, 0, 3, 1, 3, 1, 2, 0, 3, 1, 3, 4, 4, 0, 4, 1, 4, 1, 2, 0, 4, 0, 4, 1, 2, 0, 4, 1, 4, 1, 2, 0, 4, 1, 3, 0, 0, 0, 4, 1, 4, 0, 0, 0, 3, 1, 4, 1, 2, 0, 4, 0, 4, 1, 2, 0, 4, 1, 3, 1, 2, 0, 4, 0, 3, 1, 2, 0, 4, 1, 4, 0, 0, 0, 3, 1, 4, 0, 0, 0, 4]

cp's OEIS Frontend

A241424 Largest number k > 0 such that n - k! is prime, or 0 if no such k exists.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	2
5	2
6	1
7	2
8	3
9	3
10	0
11	3
12	1
13	3
14	1
15	2
16	0
17	3
18	1
19	3
20	1
21	2
22	0
23	3
24	1
25	3
26	4
27	4
28	0
29	4
30	1
31	4
32	1
33	2
34	0
35	4
36	0
37	4
38	1
39	2
40	0
41	4
42	1
43	4
44	1
45	2
46	0
47	4
48	1
49	3
50	0
51	0
52	0
53	4
54	1
55	4
56	0
57	0
58	0
59	3
60	1
61	4
62	1
63	2
64	0
65	4
66	0
67	4
68	1
69	2
70	0
71	4
72	1
73	3
74	1
75	2
76	0
77	4
78	0
79	3
80	1
81	2
82	0
83	4
84	1
85	4
86	0
87	0
88	0
89	3
90	1
91	4
92	0
93	0
94	0
95	4

n	a(n)
1	0
2	0
3	1
4	2
5	2
6	1
7	2
8	3
9	3
10	0
11	3
12	1
13	3
14	1
15	2
16	0
17	3
18	1
19	3
20	1
21	2
22	0
23	3
24	1
25	3
26	4
27	4
28	0
29	4
30	1
31	4
32	1
33	2
34	0
35	4
36	0
37	4
38	1
39	2
40	0
41	4
42	1
43	4
44	1
45	2
46	0
47	4
48	1
49	3
50	0
51	0
52	0
53	4
54	1
55	4
56	0
57	0
58	0
59	3
60	1
61	4
62	1
63	2
64	0
65	4
66	0
67	4
68	1
69	2
70	0
71	4
72	1
73	3
74	1
75	2
76	0
77	4
78	0
79	3
80	1
81	2
82	0
83	4
84	1
85	4
86	0
87	0
88	0
89	3
90	1
91	4
92	0
93	0
94	0
95	4

n	a(n)
1	0
2	0
3	1
4	2
5	2
6	1
7	2
8	3
9	3
10	0
11	3
12	1
13	3
14	1
15	2
16	0
17	3
18	1
19	3
20	1
21	2
22	0
23	3
24	1
25	3
26	4
27	4
28	0
29	4
30	1
31	4
32	1
33	2
34	0
35	4
36	0
37	4
38	1
39	2
40	0
41	4
42	1
43	4
44	1
45	2
46	0
47	4
48	1
49	3
50	0
51	0
52	0
53	4
54	1
55	4
56	0
57	0
58	0
59	3
60	1
61	4
62	1
63	2
64	0
65	4
66	0
67	4
68	1
69	2
70	0
71	4
72	1
73	3
74	1
75	2
76	0
77	4
78	0
79	3
80	1
81	2
82	0
83	4
84	1
85	4
86	0
87	0
88	0
89	3
90	1
91	4
92	0
93	0
94	0
95	4