A379461 - cp's OEIS frontend

A379461 Irregular triangle read by rows in which row n lists the divisors m of n such that there is a divisor d of n with d < m < 2*d, or 0 if such 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	4
14	6
15	0
16	0
17	5
18	0
19	0
20	3
21	9
22	0
23	5
24	0
25	0
26	0
27	3
28	4
29	6
30	8
31	12
32	0
33	0
34	0
35	7
36	0
37	3
38	5
39	6
40	10
41	15
42	0
43	0
44	0
45	0
46	7
47	3
48	4
49	6
50	9
51	12
52	18
53	0
54	0
55	0
56	5
57	8
58	10
59	0
60	3
61	7
62	21
63	0
64	0
65	5
66	9
67	15
68	0
69	0
70	3
71	4
72	6
73	8
74	12
75	16
76	24
77	0
78	0
79	0
80	0
81	0
82	3
83	9
84	27
85	0

[0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 3, 4, 6, 0, 0, 5, 0, 0, 3, 9, 0, 5, 0, 0, 0, 3, 4, 6, 8, 12, 0, 0, 0, 7, 0, 3, 5, 6, 10, 15, 0, 0, 0, 0, 7, 3, 4, 6, 9, 12, 18, 0, 0, 0, 5, 8, 10, 0, 3, 7, 21, 0, 0, 5, 9, 15, 0, 0, 3, 4, 6, 8, 12, 16, 24, 0, 0, 0, 0, 0, 3, 9, 27, 0]

cp's OEIS Frontend

A379461 Irregular triangle read by rows in which row n lists the divisors m of n such that there is a divisor d of n with d < m < 2*d, or 0 if such 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	4
14	6
15	0
16	0
17	5
18	0
19	0
20	3
21	9
22	0
23	5
24	0
25	0
26	0
27	3
28	4
29	6
30	8
31	12
32	0
33	0
34	0
35	7
36	0
37	3
38	5
39	6
40	10
41	15
42	0
43	0
44	0
45	0
46	7
47	3
48	4
49	6
50	9
51	12
52	18
53	0
54	0
55	0
56	5
57	8
58	10
59	0
60	3
61	7
62	21
63	0
64	0
65	5
66	9
67	15
68	0
69	0
70	3
71	4
72	6
73	8
74	12
75	16
76	24
77	0
78	0
79	0
80	0
81	0
82	3
83	9
84	27
85	0

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

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