A093421 - cp's OEIS frontend

A093421 Triangle read by rows: T(n,k) is the denominator of f(n, k) = (Product_{i = 0..k-1} (n-i))/(Sum_{i = 1..k} i) for 1 <= k <= n.

n	a(n)
1	1
2	1
3	3
4	1
5	1
6	1
7	1
8	1
9	1
10	5
11	1
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	7
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	1
38	1
39	1
40	5
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	1
55	11
56	1
57	3
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	1
77	1
78	13
79	1
80	1
81	1
82	1
83	1
84	7
85	1
86	1
87	1
88	1
89	1
90	1
91	1
92	1
93	3
94	1
95	5
96	1
97	1
98	1
99	1
100	1
101	1
102	1
103	1
104	1
105	1

[1, 1, 3, 1, 1, 1, 1, 1, 1, 5, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 11, 1, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 13, 1, 1, 1, 1, 1, 7, 1, 1, 1, 1, 1, 1, 1, 1, 3, 1, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]

cp's OEIS Frontend

A093421 Triangle read by rows: T(n,k) is the denominator of f(n, k) = (Product_{i = 0..k-1} (n-i))/(Sum_{i = 1..k} i) for 1 <= k <= n.

Table of values

List of values

n	a(n)
1	1
2	1
3	3
4	1
5	1
6	1
7	1
8	1
9	1
10	5
11	1
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	7
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	1
38	1
39	1
40	5
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	1
55	11
56	1
57	3
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	1
77	1
78	13
79	1
80	1
81	1
82	1
83	1
84	7
85	1
86	1
87	1
88	1
89	1
90	1
91	1
92	1
93	3
94	1
95	5
96	1
97	1
98	1
99	1
100	1
101	1
102	1
103	1
104	1
105	1

n	a(n)
1	1
2	1
3	3
4	1
5	1
6	1
7	1
8	1
9	1
10	5
11	1
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	7
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	1
38	1
39	1
40	5
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	1
55	11
56	1
57	3
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	1
77	1
78	13
79	1
80	1
81	1
82	1
83	1
84	7
85	1
86	1
87	1
88	1
89	1
90	1
91	1
92	1
93	3
94	1
95	5
96	1
97	1
98	1
99	1
100	1
101	1
102	1
103	1
104	1
105	1

n	a(n)
1	1
2	1
3	3
4	1
5	1
6	1
7	1
8	1
9	1
10	5
11	1
12	3
13	1
14	1
15	1
16	1
17	1
18	1
19	1
20	1
21	7
22	1
23	1
24	1
25	1
26	1
27	1
28	1
29	1
30	3
31	1
32	1
33	1
34	1
35	1
36	1
37	1
38	1
39	1
40	5
41	1
42	1
43	1
44	1
45	1
46	1
47	1
48	1
49	1
50	1
51	1
52	1
53	1
54	1
55	11
56	1
57	3
58	1
59	1
60	1
61	1
62	1
63	1
64	1
65	1
66	1
67	1
68	1
69	1
70	1
71	1
72	1
73	1
74	1
75	1
76	1
77	1
78	13
79	1
80	1
81	1
82	1
83	1
84	7
85	1
86	1
87	1
88	1
89	1
90	1
91	1
92	1
93	3
94	1
95	5
96	1
97	1
98	1
99	1
100	1
101	1
102	1
103	1
104	1
105	1