A107711 - cp's OEIS frontend

A107711 Triangle read by rows: T(0,0)=1, T(n,m) = binomial(n,m) * gcd(n,m)/n.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	3
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	5
24	10
25	5
26	1
27	1
28	1
29	1
30	3
31	5
32	5
33	3
34	1
35	1
36	1
37	1
38	7
39	7
40	35
41	7
42	7
43	1
44	1
45	1
46	1
47	4
48	28
49	14
50	14
51	28
52	4
53	1
54	1
55	1
56	1
57	9
58	12
59	42
60	126
61	42
62	12
63	9
64	1
65	1
66	1
67	1
68	5
69	15
70	30
71	42
72	42
73	30
74	15
75	5
76	1
77	1
78	1
79	1
80	11
81	55
82	165
83	66
84	462
85	66
86	165
87	55
88	11
89	1
90	1

[1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 2, 2, 1, 1, 1, 1, 5, 10, 5, 1, 1, 1, 1, 3, 5, 5, 3, 1, 1, 1, 1, 7, 7, 35, 7, 7, 1, 1, 1, 1, 4, 28, 14, 14, 28, 4, 1, 1, 1, 1, 9, 12, 42, 126, 42, 12, 9, 1, 1, 1, 1, 5, 15, 30, 42, 42, 30, 15, 5, 1, 1, 1, 1, 11, 55, 165, 66, 462, 66, 165, 55, 11, 1, 1]

cp's OEIS Frontend

A107711 Triangle read by rows: T(0,0)=1, T(n,m) = binomial(n,m) * gcd(n,m)/n.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	3
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	5
24	10
25	5
26	1
27	1
28	1
29	1
30	3
31	5
32	5
33	3
34	1
35	1
36	1
37	1
38	7
39	7
40	35
41	7
42	7
43	1
44	1
45	1
46	1
47	4
48	28
49	14
50	14
51	28
52	4
53	1
54	1
55	1
56	1
57	9
58	12
59	42
60	126
61	42
62	12
63	9
64	1
65	1
66	1
67	1
68	5
69	15
70	30
71	42
72	42
73	30
74	15
75	5
76	1
77	1
78	1
79	1
80	11
81	55
82	165
83	66
84	462
85	66
86	165
87	55
88	11
89	1
90	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	3
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	5
24	10
25	5
26	1
27	1
28	1
29	1
30	3
31	5
32	5
33	3
34	1
35	1
36	1
37	1
38	7
39	7
40	35
41	7
42	7
43	1
44	1
45	1
46	1
47	4
48	28
49	14
50	14
51	28
52	4
53	1
54	1
55	1
56	1
57	9
58	12
59	42
60	126
61	42
62	12
63	9
64	1
65	1
66	1
67	1
68	5
69	15
70	30
71	42
72	42
73	30
74	15
75	5
76	1
77	1
78	1
79	1
80	11
81	55
82	165
83	66
84	462
85	66
86	165
87	55
88	11
89	1
90	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	1
10	1
11	1
12	3
13	1
14	1
15	1
16	1
17	2
18	2
19	1
20	1
21	1
22	1
23	5
24	10
25	5
26	1
27	1
28	1
29	1
30	3
31	5
32	5
33	3
34	1
35	1
36	1
37	1
38	7
39	7
40	35
41	7
42	7
43	1
44	1
45	1
46	1
47	4
48	28
49	14
50	14
51	28
52	4
53	1
54	1
55	1
56	1
57	9
58	12
59	42
60	126
61	42
62	12
63	9
64	1
65	1
66	1
67	1
68	5
69	15
70	30
71	42
72	42
73	30
74	15
75	5
76	1
77	1
78	1
79	1
80	11
81	55
82	165
83	66
84	462
85	66
86	165
87	55
88	11
89	1
90	1