A383209 - cp's OEIS frontend

A383209 Irregular triangle read by rows in which row n lists the odd divisors m of n such that there is a divisor d of n with d < m < 2*d, or 0 if such odd divisors do not exist.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	3
7	0
8	0
9	0
10	0
11	0
12	3
13	0
14	0
15	5
16	0
17	0
18	3
19	9
20	0
21	5
22	0
23	0
24	0
25	3
26	0
27	0
28	0
29	7
30	0
31	3
32	5
33	15
34	0
35	0
36	0
37	0
38	7
39	3
40	9
41	0
42	0
43	0
44	5
45	0
46	3
47	7
48	21
49	0
50	0
51	5
52	9
53	15
54	0
55	0
56	3
57	0
58	0
59	0
60	0
61	0
62	3
63	9
64	27
65	0
66	7
67	0
68	0
69	0
70	3
71	5
72	15
73	0
74	0
75	9
76	0
77	0
78	3
79	11
80	33
81	0
82	0
83	0
84	7
85	0
86	3
87	9
88	0
89	0
90	5
91	25
92	0
93	11
94	3
95	39

[0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 3, 0, 0, 5, 0, 0, 3, 9, 0, 5, 0, 0, 0, 3, 0, 0, 0, 7, 0, 3, 5, 15, 0, 0, 0, 0, 7, 3, 9, 0, 0, 0, 5, 0, 3, 7, 21, 0, 0, 5, 9, 15, 0, 0, 3, 0, 0, 0, 0, 0, 3, 9, 27, 0, 7, 0, 0, 0, 3, 5, 15, 0, 0, 9, 0, 0, 3, 11, 33, 0, 0, 0, 7, 0, 3, 9, 0, 0, 5, 25, 0, 11, 3, 39]

cp's OEIS Frontend

A383209 Irregular triangle read by rows in which row n lists the odd divisors m of n such that there is a divisor d of n with d < m < 2*d, or 0 if such odd divisors do not exist.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	3
7	0
8	0
9	0
10	0
11	0
12	3
13	0
14	0
15	5
16	0
17	0
18	3
19	9
20	0
21	5
22	0
23	0
24	0
25	3
26	0
27	0
28	0
29	7
30	0
31	3
32	5
33	15
34	0
35	0
36	0
37	0
38	7
39	3
40	9
41	0
42	0
43	0
44	5
45	0
46	3
47	7
48	21
49	0
50	0
51	5
52	9
53	15
54	0
55	0
56	3
57	0
58	0
59	0
60	0
61	0
62	3
63	9
64	27
65	0
66	7
67	0
68	0
69	0
70	3
71	5
72	15
73	0
74	0
75	9
76	0
77	0
78	3
79	11
80	33
81	0
82	0
83	0
84	7
85	0
86	3
87	9
88	0
89	0
90	5
91	25
92	0
93	11
94	3
95	39

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	3
7	0
8	0
9	0
10	0
11	0
12	3
13	0
14	0
15	5
16	0
17	0
18	3
19	9
20	0
21	5
22	0
23	0
24	0
25	3
26	0
27	0
28	0
29	7
30	0
31	3
32	5
33	15
34	0
35	0
36	0
37	0
38	7
39	3
40	9
41	0
42	0
43	0
44	5
45	0
46	3
47	7
48	21
49	0
50	0
51	5
52	9
53	15
54	0
55	0
56	3
57	0
58	0
59	0
60	0
61	0
62	3
63	9
64	27
65	0
66	7
67	0
68	0
69	0
70	3
71	5
72	15
73	0
74	0
75	9
76	0
77	0
78	3
79	11
80	33
81	0
82	0
83	0
84	7
85	0
86	3
87	9
88	0
89	0
90	5
91	25
92	0
93	11
94	3
95	39

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	3
7	0
8	0
9	0
10	0
11	0
12	3
13	0
14	0
15	5
16	0
17	0
18	3
19	9
20	0
21	5
22	0
23	0
24	0
25	3
26	0
27	0
28	0
29	7
30	0
31	3
32	5
33	15
34	0
35	0
36	0
37	0
38	7
39	3
40	9
41	0
42	0
43	0
44	5
45	0
46	3
47	7
48	21
49	0
50	0
51	5
52	9
53	15
54	0
55	0
56	3
57	0
58	0
59	0
60	0
61	0
62	3
63	9
64	27
65	0
66	7
67	0
68	0
69	0
70	3
71	5
72	15
73	0
74	0
75	9
76	0
77	0
78	3
79	11
80	33
81	0
82	0
83	0
84	7
85	0
86	3
87	9
88	0
89	0
90	5
91	25
92	0
93	11
94	3
95	39