A267823 - cp's OEIS frontend

A267823 Least k such that primorial(n) divides binomial(2k,k).

n	a(n)
1	1
2	2
3	8
4	18
5	18
6	20
7	77
8	128
9	128
10	202
11	202
12	545
13	611
14	771
15	978
16	983
17	983
18	1625
19	2441
20	2481
21	2481
22	2995
23	3054
24	3284
25	3284
26	3284
27	3284
28	3284
29	5534
30	5534
31	5534
32	8355
33	8355
34	10558
35	10558
36	10558
37	45416
38	45416
39	45416
40	45416
41	45416
42	45416
43	45416

[1, 2, 8, 18, 18, 20, 77, 128, 128, 202, 202, 545, 611, 771, 978, 983, 983, 1625, 2441, 2481, 2481, 2995, 3054, 3284, 3284, 3284, 3284, 3284, 5534, 5534, 5534, 8355, 8355, 10558, 10558, 10558, 45416, 45416, 45416, 45416, 45416, 45416, 45416]

cp's OEIS Frontend

A267823 Least k such that primorial(n) divides binomial(2k,k).

Table of values

List of values