A140822 - cp's OEIS frontend

A140822 Triangle T(n,m) = binomial(n,gcd(n,m)) read by rows, 0<=m<=n.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	6
13	4
14	1
15	1
16	5
17	5
18	5
19	5
20	1
21	1
22	6
23	15
24	20
25	15
26	6
27	1
28	1
29	7
30	7
31	7
32	7
33	7
34	7
35	1
36	1
37	8
38	28
39	8
40	70
41	8
42	28
43	8
44	1
45	1
46	9
47	9
48	84
49	9
50	9
51	84
52	9
53	9
54	1
55	1
56	10
57	45
58	10
59	45
60	252
61	45
62	10
63	45
64	10
65	1

[1, 1, 1, 1, 2, 1, 1, 3, 3, 1, 1, 4, 6, 4, 1, 1, 5, 5, 5, 5, 1, 1, 6, 15, 20, 15, 6, 1, 1, 7, 7, 7, 7, 7, 7, 1, 1, 8, 28, 8, 70, 8, 28, 8, 1, 1, 9, 9, 84, 9, 9, 84, 9, 9, 1, 1, 10, 45, 10, 45, 252, 45, 10, 45, 10, 1]

cp's OEIS Frontend

A140822 Triangle T(n,m) = binomial(n,gcd(n,m)) read by rows, 0<=m<=n.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	6
13	4
14	1
15	1
16	5
17	5
18	5
19	5
20	1
21	1
22	6
23	15
24	20
25	15
26	6
27	1
28	1
29	7
30	7
31	7
32	7
33	7
34	7
35	1
36	1
37	8
38	28
39	8
40	70
41	8
42	28
43	8
44	1
45	1
46	9
47	9
48	84
49	9
50	9
51	84
52	9
53	9
54	1
55	1
56	10
57	45
58	10
59	45
60	252
61	45
62	10
63	45
64	10
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	6
13	4
14	1
15	1
16	5
17	5
18	5
19	5
20	1
21	1
22	6
23	15
24	20
25	15
26	6
27	1
28	1
29	7
30	7
31	7
32	7
33	7
34	7
35	1
36	1
37	8
38	28
39	8
40	70
41	8
42	28
43	8
44	1
45	1
46	9
47	9
48	84
49	9
50	9
51	84
52	9
53	9
54	1
55	1
56	10
57	45
58	10
59	45
60	252
61	45
62	10
63	45
64	10
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	1
6	1
7	3
8	3
9	1
10	1
11	4
12	6
13	4
14	1
15	1
16	5
17	5
18	5
19	5
20	1
21	1
22	6
23	15
24	20
25	15
26	6
27	1
28	1
29	7
30	7
31	7
32	7
33	7
34	7
35	1
36	1
37	8
38	28
39	8
40	70
41	8
42	28
43	8
44	1
45	1
46	9
47	9
48	84
49	9
50	9
51	84
52	9
53	9
54	1
55	1
56	10
57	45
58	10
59	45
60	252
61	45
62	10
63	45
64	10
65	1