A081392 - cp's OEIS frontend

A081392 Numbers k such that the central binomial coefficient C(k, floor(k/2)) has only one prime divisor whose exponent is greater than one.

n	a(n)
1	6
2	9
3	12
4	13
5	14
6	15
7	16
8	18
9	20
10	21
11	22
12	24
13	31
14	32
15	33
16	35
17	39
18	41
19	42
20	43
21	44
22	55
23	56
24	57
25	58
26	59
27	60
28	61
29	62
30	65
31	67
32	72
33	73
34	74
35	79
36	107
37	108
38	109
39	110
40	113
41	114
42	115
43	116
44	131
45	159
46	219
47	220
48	271
49	319
50	341
51	342
52	1567
53	1568
54	1571
55	1572

[6, 9, 12, 13, 14, 15, 16, 18, 20, 21, 22, 24, 31, 32, 33, 35, 39, 41, 42, 43, 44, 55, 56, 57, 58, 59, 60, 61, 62, 65, 67, 72, 73, 74, 79, 107, 108, 109, 110, 113, 114, 115, 116, 131, 159, 219, 220, 271, 319, 341, 342, 1567, 1568, 1571, 1572]

cp's OEIS Frontend

A081392 Numbers k such that the central binomial coefficient C(k, floor(k/2)) has only one prime divisor whose exponent is greater than one.

Table of values

List of values