A386984 - cp's OEIS frontend

A386984 Number of 2-dense sublists of divisors of the n-th hexagonal number.

n	a(n)
0	1
1	1
2	1
3	3
4	1
5	3
6	1
7	3
8	1
9	5
10	3
11	5
12	1
13	5
14	1
15	5
16	1
17	5
18	1
19	3
20	1
21	7
22	3
23	3
24	1
25	5
26	3
27	7
28	1
29	5
30	1
31	3
32	1
33	7
34	3
35	5
36	1
37	3
38	1
39	5
40	1
41	7
42	1
43	7
44	1
45	5
46	3
47	5
48	1
49	5
50	1
51	7
52	3
53	5
54	1
55	7
56	1
57	7
58	5
59	7
60	1
61	5
62	3
63	3
64	1
65	7
66	1
67	7
68	1
69	7
70	5
71	5
72	1
73	7
74	1
75	7
76	3
77	5
78	1
79	3
80	1
81	9
82	3
83	7
84	1
85	7
86	1
87	7
88	1
89	5
90	1
91	5
92	1
93	9
94	3
95	3
96	1
97	3
98	1
99	9
100	1

[1, 1, 1, 3, 1, 3, 1, 3, 1, 5, 3, 5, 1, 5, 1, 5, 1, 5, 1, 3, 1, 7, 3, 3, 1, 5, 3, 7, 1, 5, 1, 3, 1, 7, 3, 5, 1, 3, 1, 5, 1, 7, 1, 7, 1, 5, 3, 5, 1, 5, 1, 7, 3, 5, 1, 7, 1, 7, 5, 7, 1, 5, 3, 3, 1, 7, 1, 7, 1, 7, 5, 5, 1, 7, 1, 7, 3, 5, 1, 3, 1, 9, 3, 7, 1, 7, 1, 7, 1, 5, 1, 5, 1, 9, 3, 3, 1, 3, 1, 9, 1]

cp's OEIS Frontend

A386984 Number of 2-dense sublists of divisors of the n-th hexagonal number.

Table of values

List of values

n	a(n)
0	1
1	1
2	1
3	3
4	1
5	3
6	1
7	3
8	1
9	5
10	3
11	5
12	1
13	5
14	1
15	5
16	1
17	5
18	1
19	3
20	1
21	7
22	3
23	3
24	1
25	5
26	3
27	7
28	1
29	5
30	1
31	3
32	1
33	7
34	3
35	5
36	1
37	3
38	1
39	5
40	1
41	7
42	1
43	7
44	1
45	5
46	3
47	5
48	1
49	5
50	1
51	7
52	3
53	5
54	1
55	7
56	1
57	7
58	5
59	7
60	1
61	5
62	3
63	3
64	1
65	7
66	1
67	7
68	1
69	7
70	5
71	5
72	1
73	7
74	1
75	7
76	3
77	5
78	1
79	3
80	1
81	9
82	3
83	7
84	1
85	7
86	1
87	7
88	1
89	5
90	1
91	5
92	1
93	9
94	3
95	3
96	1
97	3
98	1
99	9
100	1

n	a(n)
0	1
1	1
2	1
3	3
4	1
5	3
6	1
7	3
8	1
9	5
10	3
11	5
12	1
13	5
14	1
15	5
16	1
17	5
18	1
19	3
20	1
21	7
22	3
23	3
24	1
25	5
26	3
27	7
28	1
29	5
30	1
31	3
32	1
33	7
34	3
35	5
36	1
37	3
38	1
39	5
40	1
41	7
42	1
43	7
44	1
45	5
46	3
47	5
48	1
49	5
50	1
51	7
52	3
53	5
54	1
55	7
56	1
57	7
58	5
59	7
60	1
61	5
62	3
63	3
64	1
65	7
66	1
67	7
68	1
69	7
70	5
71	5
72	1
73	7
74	1
75	7
76	3
77	5
78	1
79	3
80	1
81	9
82	3
83	7
84	1
85	7
86	1
87	7
88	1
89	5
90	1
91	5
92	1
93	9
94	3
95	3
96	1
97	3
98	1
99	9
100	1

n	a(n)
0	1
1	1
2	1
3	3
4	1
5	3
6	1
7	3
8	1
9	5
10	3
11	5
12	1
13	5
14	1
15	5
16	1
17	5
18	1
19	3
20	1
21	7
22	3
23	3
24	1
25	5
26	3
27	7
28	1
29	5
30	1
31	3
32	1
33	7
34	3
35	5
36	1
37	3
38	1
39	5
40	1
41	7
42	1
43	7
44	1
45	5
46	3
47	5
48	1
49	5
50	1
51	7
52	3
53	5
54	1
55	7
56	1
57	7
58	5
59	7
60	1
61	5
62	3
63	3
64	1
65	7
66	1
67	7
68	1
69	7
70	5
71	5
72	1
73	7
74	1
75	7
76	3
77	5
78	1
79	3
80	1
81	9
82	3
83	7
84	1
85	7
86	1
87	7
88	1
89	5
90	1
91	5
92	1
93	9
94	3
95	3
96	1
97	3
98	1
99	9
100	1