A046221 - cp's OEIS frontend

A046221 Odd numbers on numerators of 1/2-Pascal triangle (by row).

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	3
10	1
11	1
12	5
13	3
14	5
15	1
16	1
17	7
18	11
19	11
20	7
21	1
22	1
23	9
24	9
25	11
26	9
27	9
28	1
29	1
30	11
31	27
32	27
33	11
34	1
35	1
36	13
37	19
38	67
39	67
40	19
41	13
42	1
43	1
44	15
45	51
46	105
47	147
48	147
49	105
50	51
51	15
52	1
53	1
54	17
55	33
56	147
57	33
58	17
59	1
60	1
61	19
62	83
63	111
64	273
65	273
66	111
67	83
68	19
69	1
70	1
71	21
72	51

[1, 1, 1, 1, 1, 1, 1, 3, 3, 1, 1, 5, 3, 5, 1, 1, 7, 11, 11, 7, 1, 1, 9, 9, 11, 9, 9, 1, 1, 11, 27, 27, 11, 1, 1, 13, 19, 67, 67, 19, 13, 1, 1, 15, 51, 105, 147, 147, 105, 51, 15, 1, 1, 17, 33, 147, 33, 17, 1, 1, 19, 83, 111, 273, 273, 111, 83, 19, 1, 1, 21, 51]

cp's OEIS Frontend

A046221 Odd numbers on numerators of 1/2-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	3
9	3
10	1
11	1
12	5
13	3
14	5
15	1
16	1
17	7
18	11
19	11
20	7
21	1
22	1
23	9
24	9
25	11
26	9
27	9
28	1
29	1
30	11
31	27
32	27
33	11
34	1
35	1
36	13
37	19
38	67
39	67
40	19
41	13
42	1
43	1
44	15
45	51
46	105
47	147
48	147
49	105
50	51
51	15
52	1
53	1
54	17
55	33
56	147
57	33
58	17
59	1
60	1
61	19
62	83
63	111
64	273
65	273
66	111
67	83
68	19
69	1
70	1
71	21
72	51

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	3
10	1
11	1
12	5
13	3
14	5
15	1
16	1
17	7
18	11
19	11
20	7
21	1
22	1
23	9
24	9
25	11
26	9
27	9
28	1
29	1
30	11
31	27
32	27
33	11
34	1
35	1
36	13
37	19
38	67
39	67
40	19
41	13
42	1
43	1
44	15
45	51
46	105
47	147
48	147
49	105
50	51
51	15
52	1
53	1
54	17
55	33
56	147
57	33
58	17
59	1
60	1
61	19
62	83
63	111
64	273
65	273
66	111
67	83
68	19
69	1
70	1
71	21
72	51

n	a(n)
1	1
2	1
3	1
4	1
5	1
6	1
7	1
8	3
9	3
10	1
11	1
12	5
13	3
14	5
15	1
16	1
17	7
18	11
19	11
20	7
21	1
22	1
23	9
24	9
25	11
26	9
27	9
28	1
29	1
30	11
31	27
32	27
33	11
34	1
35	1
36	13
37	19
38	67
39	67
40	19
41	13
42	1
43	1
44	15
45	51
46	105
47	147
48	147
49	105
50	51
51	15
52	1
53	1
54	17
55	33
56	147
57	33
58	17
59	1
60	1
61	19
62	83
63	111
64	273
65	273
66	111
67	83
68	19
69	1
70	1
71	21
72	51