A309364 - cp's OEIS frontend

A309364 a(n) is the least k >= 0 such that n divides C(k) (where C(k) are the Catalan numbers A000108).

n	a(n)
1	0
2	2
3	5
4	6
5	3
6	5
7	4
8	14
9	14
10	8
11	6
12	6
13	7
14	4
15	14
16	30
17	9
18	14
19	10
20	13
21	5
22	6
23	12
24	14
25	13
26	8
27	41
28	12
29	15
30	14
31	16
32	62
33	6
34	9
35	18
36	14
37	19
38	10
39	7
40	14
41	21
42	5
43	22
44	6
45	14
46	12
47	24
48	46
49	25
50	13
51	14
52	10
53	27
54	41
55	8
56	26
57	14
58	16
59	30
60	14
61	31
62	16
63	25
64	126
65	8
66	6
67	34
68	10
69	14
70	18
71	36

[0, 2, 5, 6, 3, 5, 4, 14, 14, 8, 6, 6, 7, 4, 14, 30, 9, 14, 10, 13, 5, 6, 12, 14, 13, 8, 41, 12, 15, 14, 16, 62, 6, 9, 18, 14, 19, 10, 7, 14, 21, 5, 22, 6, 14, 12, 24, 46, 25, 13, 14, 10, 27, 41, 8, 26, 14, 16, 30, 14, 31, 16, 25, 126, 8, 6, 34, 10, 14, 18, 36]

cp's OEIS Frontend

A309364 a(n) is the least k >= 0 such that n divides C(k) (where C(k) are the Catalan numbers A000108).

Table of values

List of values

n	a(n)
1	0
2	2
3	5
4	6
5	3
6	5
7	4
8	14
9	14
10	8
11	6
12	6
13	7
14	4
15	14
16	30
17	9
18	14
19	10
20	13
21	5
22	6
23	12
24	14
25	13
26	8
27	41
28	12
29	15
30	14
31	16
32	62
33	6
34	9
35	18
36	14
37	19
38	10
39	7
40	14
41	21
42	5
43	22
44	6
45	14
46	12
47	24
48	46
49	25
50	13
51	14
52	10
53	27
54	41
55	8
56	26
57	14
58	16
59	30
60	14
61	31
62	16
63	25
64	126
65	8
66	6
67	34
68	10
69	14
70	18
71	36

n	a(n)
1	0
2	2
3	5
4	6
5	3
6	5
7	4
8	14
9	14
10	8
11	6
12	6
13	7
14	4
15	14
16	30
17	9
18	14
19	10
20	13
21	5
22	6
23	12
24	14
25	13
26	8
27	41
28	12
29	15
30	14
31	16
32	62
33	6
34	9
35	18
36	14
37	19
38	10
39	7
40	14
41	21
42	5
43	22
44	6
45	14
46	12
47	24
48	46
49	25
50	13
51	14
52	10
53	27
54	41
55	8
56	26
57	14
58	16
59	30
60	14
61	31
62	16
63	25
64	126
65	8
66	6
67	34
68	10
69	14
70	18
71	36

n	a(n)
1	0
2	2
3	5
4	6
5	3
6	5
7	4
8	14
9	14
10	8
11	6
12	6
13	7
14	4
15	14
16	30
17	9
18	14
19	10
20	13
21	5
22	6
23	12
24	14
25	13
26	8
27	41
28	12
29	15
30	14
31	16
32	62
33	6
34	9
35	18
36	14
37	19
38	10
39	7
40	14
41	21
42	5
43	22
44	6
45	14
46	12
47	24
48	46
49	25
50	13
51	14
52	10
53	27
54	41
55	8
56	26
57	14
58	16
59	30
60	14
61	31
62	16
63	25
64	126
65	8
66	6
67	34
68	10
69	14
70	18
71	36