A046564 - cp's OEIS frontend

A046564 First denominator and then numerator of each element of the 1/4-Pascal triangle (by row).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	4
10	1
11	1
12	1
13	1
14	1
15	4
16	5
17	4
18	5
19	1
20	1
21	1
22	1
23	4
24	9
25	2
26	5
27	4
28	9
29	1
30	1
31	1
32	1
33	4
34	13
35	4
36	19
37	4
38	19
39	4
40	13
41	1
42	1
43	1
44	1
45	4
46	17
47	1
48	8
49	2
50	19
51	1
52	8
53	4
54	17
55	1
56	1
57	1
58	1
59	4
60	21
61	4
62	49
63	2
64	35
65	2
66	35
67	4
68	49
69	4
70	21
71	1
72	1
73	1
74	1
75	4
76	25
77	2
78	35
79	4
80	119
81	1
82	35
83	4
84	119
85	2
86	35
87	4
88	25
89	1
90	1
91	1
92	1
93	4

[1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 1, 4, 5, 4, 5, 1, 1, 1, 1, 4, 9, 2, 5, 4, 9, 1, 1, 1, 1, 4, 13, 4, 19, 4, 19, 4, 13, 1, 1, 1, 1, 4, 17, 1, 8, 2, 19, 1, 8, 4, 17, 1, 1, 1, 1, 4, 21, 4, 49, 2, 35, 2, 35, 4, 49, 4, 21, 1, 1, 1, 1, 4, 25, 2, 35, 4, 119, 1, 35, 4, 119, 2, 35, 4, 25, 1, 1, 1, 1, 4]

cp's OEIS Frontend

A046564 First denominator and then numerator of each element of the 1/4-Pascal triangle (by row).

Table of values

List of values

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	4
10	1
11	1
12	1
13	1
14	1
15	4
16	5
17	4
18	5
19	1
20	1
21	1
22	1
23	4
24	9
25	2
26	5
27	4
28	9
29	1
30	1
31	1
32	1
33	4
34	13
35	4
36	19
37	4
38	19
39	4
40	13
41	1
42	1
43	1
44	1
45	4
46	17
47	1
48	8
49	2
50	19
51	1
52	8
53	4
54	17
55	1
56	1
57	1
58	1
59	4
60	21
61	4
62	49
63	2
64	35
65	2
66	35
67	4
68	49
69	4
70	21
71	1
72	1
73	1
74	1
75	4
76	25
77	2
78	35
79	4
80	119
81	1
82	35
83	4
84	119
85	2
86	35
87	4
88	25
89	1
90	1
91	1
92	1
93	4

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	4
10	1
11	1
12	1
13	1
14	1
15	4
16	5
17	4
18	5
19	1
20	1
21	1
22	1
23	4
24	9
25	2
26	5
27	4
28	9
29	1
30	1
31	1
32	1
33	4
34	13
35	4
36	19
37	4
38	19
39	4
40	13
41	1
42	1
43	1
44	1
45	4
46	17
47	1
48	8
49	2
50	19
51	1
52	8
53	4
54	17
55	1
56	1
57	1
58	1
59	4
60	21
61	4
62	49
63	2
64	35
65	2
66	35
67	4
68	49
69	4
70	21
71	1
72	1
73	1
74	1
75	4
76	25
77	2
78	35
79	4
80	119
81	1
82	35
83	4
84	119
85	2
86	35
87	4
88	25
89	1
90	1
91	1
92	1
93	4

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	1
9	4
10	1
11	1
12	1
13	1
14	1
15	4
16	5
17	4
18	5
19	1
20	1
21	1
22	1
23	4
24	9
25	2
26	5
27	4
28	9
29	1
30	1
31	1
32	1
33	4
34	13
35	4
36	19
37	4
38	19
39	4
40	13
41	1
42	1
43	1
44	1
45	4
46	17
47	1
48	8
49	2
50	19
51	1
52	8
53	4
54	17
55	1
56	1
57	1
58	1
59	4
60	21
61	4
62	49
63	2
64	35
65	2
66	35
67	4
68	49
69	4
70	21
71	1
72	1
73	1
74	1
75	4
76	25
77	2
78	35
79	4
80	119
81	1
82	35
83	4
84	119
85	2
86	35
87	4
88	25
89	1
90	1
91	1
92	1
93	4