A161642 - cp's OEIS frontend

A161642 Triangle (by rows): T(n,k) = A007318(n,k) / A003989(n+1,k+1).

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	2
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	3
23	15
24	5
25	15
26	3
27	1
28	1
29	7
30	7
31	35
32	35
33	7
34	7
35	1
36	1
37	4
38	28
39	28
40	14
41	28
42	28
43	4
44	1
45	1
46	9
47	36
48	84
49	126
50	126
51	84
52	36
53	9
54	1
55	1
56	5
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	5
65	1

[1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 2, 2, 2, 1, 1, 5, 10, 10, 5, 1, 1, 3, 15, 5, 15, 3, 1, 1, 7, 7, 35, 35, 7, 7, 1, 1, 4, 28, 28, 14, 28, 28, 4, 1, 1, 9, 36, 84, 126, 126, 84, 36, 9, 1, 1, 5, 15, 30, 210, 42, 210, 30, 15, 5, 1]

cp's OEIS Frontend

A161642 Triangle (by rows): T(n,k) = A007318(n,k) / A003989(n+1,k+1).

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	2
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	3
23	15
24	5
25	15
26	3
27	1
28	1
29	7
30	7
31	35
32	35
33	7
34	7
35	1
36	1
37	4
38	28
39	28
40	14
41	28
42	28
43	4
44	1
45	1
46	9
47	36
48	84
49	126
50	126
51	84
52	36
53	9
54	1
55	1
56	5
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	5
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	2
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	3
23	15
24	5
25	15
26	3
27	1
28	1
29	7
30	7
31	35
32	35
33	7
34	7
35	1
36	1
37	4
38	28
39	28
40	14
41	28
42	28
43	4
44	1
45	1
46	9
47	36
48	84
49	126
50	126
51	84
52	36
53	9
54	1
55	1
56	5
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	5
65	1

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	1
7	3
8	3
9	1
10	1
11	2
12	2
13	2
14	1
15	1
16	5
17	10
18	10
19	5
20	1
21	1
22	3
23	15
24	5
25	15
26	3
27	1
28	1
29	7
30	7
31	35
32	35
33	7
34	7
35	1
36	1
37	4
38	28
39	28
40	14
41	28
42	28
43	4
44	1
45	1
46	9
47	36
48	84
49	126
50	126
51	84
52	36
53	9
54	1
55	1
56	5
57	15
58	30
59	210
60	42
61	210
62	30
63	15
64	5
65	1