A158871 - cp's OEIS frontend

A158871 Those positive integers m where (the number of integers k, 0 <= k <= m, where the binomial coefficient C(m,k) is divisible by m) > (the number of positive integers <= m and coprime to m).

n	a(n)
1	1
2	10
3	12
4	18
5	20
6	21
7	22
8	24
9	26
10	28
11	30
12	33
13	34
14	35
15	36
16	38
17	39
18	40
19	42
20	44
21	45
22	46
23	48
24	50
25	52
26	54
27	55
28	56
29	57
30	58
31	60
32	63
33	65
34	66
35	68
36	69
37	70
38	72
39	74
40	75
41	76
42	77
43	78
44	80
45	82
46	84
47	85
48	86
49	87
50	88
51	90
52	92
53	93
54	94
55	96
56	98
57	99
58	100
59	102
60	104
61	105
62	106
63	108
64	110
65	111
66	112
67	114

[1, 10, 12, 18, 20, 21, 22, 24, 26, 28, 30, 33, 34, 35, 36, 38, 39, 40, 42, 44, 45, 46, 48, 50, 52, 54, 55, 56, 57, 58, 60, 63, 65, 66, 68, 69, 70, 72, 74, 75, 76, 77, 78, 80, 82, 84, 85, 86, 87, 88, 90, 92, 93, 94, 96, 98, 99, 100, 102, 104, 105, 106, 108, 110, 111, 112, 114]

cp's OEIS Frontend

A158871 Those positive integers m where (the number of integers k, 0 <= k <= m, where the binomial coefficient C(m,k) is divisible by m) > (the number of positive integers <= m and coprime to m).

Table of values

List of values

n	a(n)
1	1
2	10
3	12
4	18
5	20
6	21
7	22
8	24
9	26
10	28
11	30
12	33
13	34
14	35
15	36
16	38
17	39
18	40
19	42
20	44
21	45
22	46
23	48
24	50
25	52
26	54
27	55
28	56
29	57
30	58
31	60
32	63
33	65
34	66
35	68
36	69
37	70
38	72
39	74
40	75
41	76
42	77
43	78
44	80
45	82
46	84
47	85
48	86
49	87
50	88
51	90
52	92
53	93
54	94
55	96
56	98
57	99
58	100
59	102
60	104
61	105
62	106
63	108
64	110
65	111
66	112
67	114

n	a(n)
1	1
2	10
3	12
4	18
5	20
6	21
7	22
8	24
9	26
10	28
11	30
12	33
13	34
14	35
15	36
16	38
17	39
18	40
19	42
20	44
21	45
22	46
23	48
24	50
25	52
26	54
27	55
28	56
29	57
30	58
31	60
32	63
33	65
34	66
35	68
36	69
37	70
38	72
39	74
40	75
41	76
42	77
43	78
44	80
45	82
46	84
47	85
48	86
49	87
50	88
51	90
52	92
53	93
54	94
55	96
56	98
57	99
58	100
59	102
60	104
61	105
62	106
63	108
64	110
65	111
66	112
67	114

n	a(n)
1	1
2	10
3	12
4	18
5	20
6	21
7	22
8	24
9	26
10	28
11	30
12	33
13	34
14	35
15	36
16	38
17	39
18	40
19	42
20	44
21	45
22	46
23	48
24	50
25	52
26	54
27	55
28	56
29	57
30	58
31	60
32	63
33	65
34	66
35	68
36	69
37	70
38	72
39	74
40	75
41	76
42	77
43	78
44	80
45	82
46	84
47	85
48	86
49	87
50	88
51	90
52	92
53	93
54	94
55	96
56	98
57	99
58	100
59	102
60	104
61	105
62	106
63	108
64	110
65	111
66	112
67	114