A046591 - cp's OEIS frontend

A046591 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 2's.

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

[1, 1, 1, 1, 1, 1, 1, 1, 1, 4, 1, 1, 1, 1, 5, 4, 5, 4, 1, 1, 1, 1, 9, 4, 5, 9, 4, 1, 1, 1, 1, 13, 4, 19, 4, 19, 4, 13, 4, 1, 1, 1, 1, 17, 4, 8, 1, 19, 8, 1, 17, 4, 1, 1, 1, 1, 21, 4, 49, 4, 35, 35, 49, 4, 21, 4, 1, 1, 1, 1, 25, 4, 35, 119, 4, 35, 1, 119, 4, 35, 25, 4, 1, 1, 1, 1, 29, 4]

cp's OEIS Frontend

A046591 First numerator and then denominator of each element of the 1/4-Pascal triangle (by row), excluding 2's.

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

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

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