A046213 - cp's OEIS frontend

A046213 First numerator and then denominator of 1/2-Pascal triangle (by row). To get a 1/2-Pascal triangle, replace "2" in third row of Pascal triangle with "1/2" and calculate all other rows as in Pascal triangle.

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

[1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 3, 2, 3, 2, 1, 1, 1, 1, 5, 2, 3, 1, 5, 2, 1, 1, 1, 1, 7, 2, 11, 2, 11, 2, 7, 2, 1, 1, 1, 1, 9, 2, 9, 1, 11, 1, 9, 1, 9, 2, 1, 1, 1, 1, 11, 2, 27, 2, 20, 1, 20, 1, 27, 2, 11, 2, 1, 1, 1, 1, 13, 2, 19, 1, 67, 2, 40, 1, 67, 2, 19, 1, 13, 2, 1, 1, 1, 1, 15, 2]

cp's OEIS Frontend

A046213 First numerator and then denominator of 1/2-Pascal triangle (by row). To get a 1/2-Pascal triangle, replace "2" in third row of Pascal triangle with "1/2" and calculate all other rows as in Pascal triangle.

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

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

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