A205009 - cp's OEIS frontend

A205009 Least k such that n divides the k-th difference between distinct central binomials coefficients.

n	a(n)
1	1
2	3
3	5
4	3
5	2
6	5
7	6
8	9
9	5
10	10
11	28
12	21
13	15
14	6
15	27
16	9
17	8
18	5
19	4
20	27
21	21
22	28
23	7
24	21
25	10
26	15
27	18
28	21
29	14
30	27
31	66
32	9
33	28
34	8
35	23
36	40
37	38
38	28
39	36
40	33
41	13
42	21
43	120
44	28
45	40
46	49
47	22
48	21
49	23
50	10
51	18
52	44
53	27
54	18
55	45
56	21
57	28
58	14
59	189
60	27

[1, 3, 5, 3, 2, 5, 6, 9, 5, 10, 28, 21, 15, 6, 27, 9, 8, 5, 4, 27, 21, 28, 7, 21, 10, 15, 18, 21, 14, 27, 66, 9, 28, 8, 23, 40, 38, 28, 36, 33, 13, 21, 120, 28, 40, 49, 22, 21, 23, 10, 18, 44, 27, 18, 45, 21, 28, 14, 189, 27]

cp's OEIS Frontend

A205009 Least k such that n divides the k-th difference between distinct central binomials coefficients.

Table of values

List of values

n	a(n)
1	1
2	3
3	5
4	3
5	2
6	5
7	6
8	9
9	5
10	10
11	28
12	21
13	15
14	6
15	27
16	9
17	8
18	5
19	4
20	27
21	21
22	28
23	7
24	21
25	10
26	15
27	18
28	21
29	14
30	27
31	66
32	9
33	28
34	8
35	23
36	40
37	38
38	28
39	36
40	33
41	13
42	21
43	120
44	28
45	40
46	49
47	22
48	21
49	23
50	10
51	18
52	44
53	27
54	18
55	45
56	21
57	28
58	14
59	189
60	27

n	a(n)
1	1
2	3
3	5
4	3
5	2
6	5
7	6
8	9
9	5
10	10
11	28
12	21
13	15
14	6
15	27
16	9
17	8
18	5
19	4
20	27
21	21
22	28
23	7
24	21
25	10
26	15
27	18
28	21
29	14
30	27
31	66
32	9
33	28
34	8
35	23
36	40
37	38
38	28
39	36
40	33
41	13
42	21
43	120
44	28
45	40
46	49
47	22
48	21
49	23
50	10
51	18
52	44
53	27
54	18
55	45
56	21
57	28
58	14
59	189
60	27

n	a(n)
1	1
2	3
3	5
4	3
5	2
6	5
7	6
8	9
9	5
10	10
11	28
12	21
13	15
14	6
15	27
16	9
17	8
18	5
19	4
20	27
21	21
22	28
23	7
24	21
25	10
26	15
27	18
28	21
29	14
30	27
31	66
32	9
33	28
34	8
35	23
36	40
37	38
38	28
39	36
40	33
41	13
42	21
43	120
44	28
45	40
46	49
47	22
48	21
49	23
50	10
51	18
52	44
53	27
54	18
55	45
56	21
57	28
58	14
59	189
60	27