A219976 - cp's OEIS frontend

A219976 Denominators of the Inverse bi-binomial transform of A164558(n)/A027642(n) read downwards antidiagonals.

n	a(n)
0	1
1	2
2	2
3	6
4	6
5	6
6	1
7	3
8	3
9	1
10	30
11	30
12	30
13	30
14	30
15	1
16	15
17	15
18	15
19	15
20	1
21	42
22	42
23	210
24	210
25	210
26	42
27	42
28	1
29	21
30	21
31	105
32	105
33	21
34	21
35	1
36	30
37	30
38	210
39	210
40	210
41	210
42	210
43	30
44	30
45	1
46	15
47	15
48	105
49	105
50	105
51	105
52	15
53	15
54	1

[1, 2, 2, 6, 6, 6, 1, 3, 3, 1, 30, 30, 30, 30, 30, 1, 15, 15, 15, 15, 1, 42, 42, 210, 210, 210, 42, 42, 1, 21, 21, 105, 105, 21, 21, 1, 30, 30, 210, 210, 210, 210, 210, 30, 30, 1, 15, 15, 105, 105, 105, 105, 15, 15, 1]

cp's OEIS Frontend

A219976 Denominators of the Inverse bi-binomial transform of A164558(n)/A027642(n) read downwards antidiagonals.

Table of values

List of values

n	a(n)
0	1
1	2
2	2
3	6
4	6
5	6
6	1
7	3
8	3
9	1
10	30
11	30
12	30
13	30
14	30
15	1
16	15
17	15
18	15
19	15
20	1
21	42
22	42
23	210
24	210
25	210
26	42
27	42
28	1
29	21
30	21
31	105
32	105
33	21
34	21
35	1
36	30
37	30
38	210
39	210
40	210
41	210
42	210
43	30
44	30
45	1
46	15
47	15
48	105
49	105
50	105
51	105
52	15
53	15
54	1

n	a(n)
0	1
1	2
2	2
3	6
4	6
5	6
6	1
7	3
8	3
9	1
10	30
11	30
12	30
13	30
14	30
15	1
16	15
17	15
18	15
19	15
20	1
21	42
22	42
23	210
24	210
25	210
26	42
27	42
28	1
29	21
30	21
31	105
32	105
33	21
34	21
35	1
36	30
37	30
38	210
39	210
40	210
41	210
42	210
43	30
44	30
45	1
46	15
47	15
48	105
49	105
50	105
51	105
52	15
53	15
54	1

n	a(n)
0	1
1	2
2	2
3	6
4	6
5	6
6	1
7	3
8	3
9	1
10	30
11	30
12	30
13	30
14	30
15	1
16	15
17	15
18	15
19	15
20	1
21	42
22	42
23	210
24	210
25	210
26	42
27	42
28	1
29	21
30	21
31	105
32	105
33	21
34	21
35	1
36	30
37	30
38	210
39	210
40	210
41	210
42	210
43	30
44	30
45	1
46	15
47	15
48	105
49	105
50	105
51	105
52	15
53	15
54	1