A066728 - cp's OEIS frontend

A066728 a(n) is the number of integers of the form (n+k+n*k)/(n-k) for k = 1,2,...,n-1.

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

[0, 1, 1, 3, 1, 4, 2, 4, 2, 7, 1, 7, 3, 5, 3, 8, 1, 11, 3, 7, 3, 9, 2, 9, 5, 7, 3, 15, 1, 13, 3, 6, 7, 11, 3, 11, 3, 9, 3, 19, 1, 15, 5, 7, 5, 11, 2, 17, 5, 11, 3, 15, 3, 19, 7, 9, 3, 15, 1, 15, 5, 7, 11, 15, 3, 15, 3, 15, 3, 29, 1, 14, 5, 7, 11, 15, 3, 23, 4, 11, 4, 15, 3, 15, 7, 9, 3, 29, 3, 23]

cp's OEIS Frontend

A066728 a(n) is the number of integers of the form (n+k+n*k)/(n-k) for k = 1,2,...,n-1.

Table of values

List of values

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

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

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