A011857 - cp's OEIS frontend

A011857 Triangle of numbers [ C(n,k)/k ], k=1..n-1.

n	a(n)
2	2
3	3
4	1
5	4
6	3
7	1
8	5
9	5
10	3
11	1
12	6
13	7
14	6
15	3
16	1
17	7
18	10
19	11
20	8
21	4
22	1
23	8
24	14
25	18
26	17
27	11
28	4
29	1
30	9
31	18
32	28
33	31
34	25
35	14
36	5
37	1
38	10
39	22
40	40
41	52
42	50
43	35
44	17
45	5
46	1
47	11
48	27
49	55
50	82
51	92
52	77
53	47
54	20
55	6
56	1
57	12
58	33
59	73
60	123
61	158
62	154
63	113
64	61
65	24
66	6
67	1
68	13
69	39
70	95
71	178
72	257
73	286
74	245
75	160

[2, 3, 1, 4, 3, 1, 5, 5, 3, 1, 6, 7, 6, 3, 1, 7, 10, 11, 8, 4, 1, 8, 14, 18, 17, 11, 4, 1, 9, 18, 28, 31, 25, 14, 5, 1, 10, 22, 40, 52, 50, 35, 17, 5, 1, 11, 27, 55, 82, 92, 77, 47, 20, 6, 1, 12, 33, 73, 123, 158, 154, 113, 61, 24, 6, 1, 13, 39, 95, 178, 257, 286, 245, 160]

cp's OEIS Frontend

A011857 Triangle of numbers [ C(n,k)/k ], k=1..n-1.

Table of values

List of values

n	a(n)
2	2
3	3
4	1
5	4
6	3
7	1
8	5
9	5
10	3
11	1
12	6
13	7
14	6
15	3
16	1
17	7
18	10
19	11
20	8
21	4
22	1
23	8
24	14
25	18
26	17
27	11
28	4
29	1
30	9
31	18
32	28
33	31
34	25
35	14
36	5
37	1
38	10
39	22
40	40
41	52
42	50
43	35
44	17
45	5
46	1
47	11
48	27
49	55
50	82
51	92
52	77
53	47
54	20
55	6
56	1
57	12
58	33
59	73
60	123
61	158
62	154
63	113
64	61
65	24
66	6
67	1
68	13
69	39
70	95
71	178
72	257
73	286
74	245
75	160

n	a(n)
2	2
3	3
4	1
5	4
6	3
7	1
8	5
9	5
10	3
11	1
12	6
13	7
14	6
15	3
16	1
17	7
18	10
19	11
20	8
21	4
22	1
23	8
24	14
25	18
26	17
27	11
28	4
29	1
30	9
31	18
32	28
33	31
34	25
35	14
36	5
37	1
38	10
39	22
40	40
41	52
42	50
43	35
44	17
45	5
46	1
47	11
48	27
49	55
50	82
51	92
52	77
53	47
54	20
55	6
56	1
57	12
58	33
59	73
60	123
61	158
62	154
63	113
64	61
65	24
66	6
67	1
68	13
69	39
70	95
71	178
72	257
73	286
74	245
75	160

n	a(n)
2	2
3	3
4	1
5	4
6	3
7	1
8	5
9	5
10	3
11	1
12	6
13	7
14	6
15	3
16	1
17	7
18	10
19	11
20	8
21	4
22	1
23	8
24	14
25	18
26	17
27	11
28	4
29	1
30	9
31	18
32	28
33	31
34	25
35	14
36	5
37	1
38	10
39	22
40	40
41	52
42	50
43	35
44	17
45	5
46	1
47	11
48	27
49	55
50	82
51	92
52	77
53	47
54	20
55	6
56	1
57	12
58	33
59	73
60	123
61	158
62	154
63	113
64	61
65	24
66	6
67	1
68	13
69	39
70	95
71	178
72	257
73	286
74	245
75	160