A274658 - cp's OEIS frontend

A274658 Irregular triangle which lists in row n the divisors of 2*n+1.

n	a(n)
0	1
1	1
2	3
3	1
4	5
5	1
6	7
7	1
8	3
9	9
10	1
11	11
12	1
13	13
14	1
15	3
16	5
17	15
18	1
19	17
20	1
21	19
22	1
23	3
24	7
25	21
26	1
27	23
28	1
29	5
30	25
31	1
32	3
33	9
34	27
35	1
36	29
37	1
38	31
39	1
40	3
41	11
42	33
43	1
44	5
45	7
46	35
47	1
48	37
49	1
50	3
51	13
52	39
53	1
54	41
55	1
56	43
57	1
58	3
59	5
60	9
61	15
62	45

[1, 1, 3, 1, 5, 1, 7, 1, 3, 9, 1, 11, 1, 13, 1, 3, 5, 15, 1, 17, 1, 19, 1, 3, 7, 21, 1, 23, 1, 5, 25, 1, 3, 9, 27, 1, 29, 1, 31, 1, 3, 11, 33, 1, 5, 7, 35, 1, 37, 1, 3, 13, 39, 1, 41, 1, 43, 1, 3, 5, 9, 15, 45]

cp's OEIS Frontend

A274658 Irregular triangle which lists in row n the divisors of 2*n+1.

Table of values

List of values

n	a(n)
0	1
1	1
2	3
3	1
4	5
5	1
6	7
7	1
8	3
9	9
10	1
11	11
12	1
13	13
14	1
15	3
16	5
17	15
18	1
19	17
20	1
21	19
22	1
23	3
24	7
25	21
26	1
27	23
28	1
29	5
30	25
31	1
32	3
33	9
34	27
35	1
36	29
37	1
38	31
39	1
40	3
41	11
42	33
43	1
44	5
45	7
46	35
47	1
48	37
49	1
50	3
51	13
52	39
53	1
54	41
55	1
56	43
57	1
58	3
59	5
60	9
61	15
62	45

n	a(n)
0	1
1	1
2	3
3	1
4	5
5	1
6	7
7	1
8	3
9	9
10	1
11	11
12	1
13	13
14	1
15	3
16	5
17	15
18	1
19	17
20	1
21	19
22	1
23	3
24	7
25	21
26	1
27	23
28	1
29	5
30	25
31	1
32	3
33	9
34	27
35	1
36	29
37	1
38	31
39	1
40	3
41	11
42	33
43	1
44	5
45	7
46	35
47	1
48	37
49	1
50	3
51	13
52	39
53	1
54	41
55	1
56	43
57	1
58	3
59	5
60	9
61	15
62	45

n	a(n)
0	1
1	1
2	3
3	1
4	5
5	1
6	7
7	1
8	3
9	9
10	1
11	11
12	1
13	13
14	1
15	3
16	5
17	15
18	1
19	17
20	1
21	19
22	1
23	3
24	7
25	21
26	1
27	23
28	1
29	5
30	25
31	1
32	3
33	9
34	27
35	1
36	29
37	1
38	31
39	1
40	3
41	11
42	33
43	1
44	5
45	7
46	35
47	1
48	37
49	1
50	3
51	13
52	39
53	1
54	41
55	1
56	43
57	1
58	3
59	5
60	9
61	15
62	45