A205100 - cp's OEIS frontend

A205100 The index j such that n divides k!!-j!!, where k is the least index (A204982) for which such j exists.

n	a(n)
1	1
2	1
3	2
4	3
5	3
6	2
7	1
8	4
9	3
10	4
11	5
12	3
13	2
14	1
15	3
16	6
17	3
18	5
19	6
20	4
21	6
22	10
23	2
24	6
25	5
26	1
27	8
28	6
29	5
30	5
31	7
32	8
33	5
34	3
35	7
36	8
37	5
38	2
39	6
40	4
41	5
42	6
43	6
44	10
45	3
46	2
47	1
48	6
49	7
50	9
51	3
52	1
53	9
54	8
55	10
56	6
57	6
58	4
59	1
60	7

[1, 1, 2, 3, 3, 2, 1, 4, 3, 4, 5, 3, 2, 1, 3, 6, 3, 5, 6, 4, 6, 10, 2, 6, 5, 1, 8, 6, 5, 5, 7, 8, 5, 3, 7, 8, 5, 2, 6, 4, 5, 6, 6, 10, 3, 2, 1, 6, 7, 9, 3, 1, 9, 8, 10, 6, 6, 4, 1, 7]

cp's OEIS Frontend

A205100 The index j such that n divides k!!-j!!, where k is the least index (A204982) for which such j exists.

Table of values

List of values

n	a(n)
1	1
2	1
3	2
4	3
5	3
6	2
7	1
8	4
9	3
10	4
11	5
12	3
13	2
14	1
15	3
16	6
17	3
18	5
19	6
20	4
21	6
22	10
23	2
24	6
25	5
26	1
27	8
28	6
29	5
30	5
31	7
32	8
33	5
34	3
35	7
36	8
37	5
38	2
39	6
40	4
41	5
42	6
43	6
44	10
45	3
46	2
47	1
48	6
49	7
50	9
51	3
52	1
53	9
54	8
55	10
56	6
57	6
58	4
59	1
60	7

n	a(n)
1	1
2	1
3	2
4	3
5	3
6	2
7	1
8	4
9	3
10	4
11	5
12	3
13	2
14	1
15	3
16	6
17	3
18	5
19	6
20	4
21	6
22	10
23	2
24	6
25	5
26	1
27	8
28	6
29	5
30	5
31	7
32	8
33	5
34	3
35	7
36	8
37	5
38	2
39	6
40	4
41	5
42	6
43	6
44	10
45	3
46	2
47	1
48	6
49	7
50	9
51	3
52	1
53	9
54	8
55	10
56	6
57	6
58	4
59	1
60	7

n	a(n)
1	1
2	1
3	2
4	3
5	3
6	2
7	1
8	4
9	3
10	4
11	5
12	3
13	2
14	1
15	3
16	6
17	3
18	5
19	6
20	4
21	6
22	10
23	2
24	6
25	5
26	1
27	8
28	6
29	5
30	5
31	7
32	8
33	5
34	3
35	7
36	8
37	5
38	2
39	6
40	4
41	5
42	6
43	6
44	10
45	3
46	2
47	1
48	6
49	7
50	9
51	3
52	1
53	9
54	8
55	10
56	6
57	6
58	4
59	1
60	7