A380600 - cp's OEIS frontend

A380600 Irregular table T(n, k), n > 0, k = 1..A000005(n) read by rows: the n-th row lists the numbers of the form n * (d-1) / d with d a positive divisor of n.

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

[0, 0, 1, 0, 2, 0, 2, 3, 0, 4, 0, 3, 4, 5, 0, 6, 0, 4, 6, 7, 0, 6, 8, 0, 5, 8, 9, 0, 10, 0, 6, 8, 9, 10, 11, 0, 12, 0, 7, 12, 13, 0, 10, 12, 14, 0, 8, 12, 14, 15, 0, 16, 0, 9, 12, 15, 16, 17, 0, 18, 0, 10, 15, 16, 18, 19, 0, 14, 18, 20, 0, 11, 20, 21, 0, 22]

cp's OEIS Frontend

A380600 Irregular table T(n, k), n > 0, k = 1..A000005(n) read by rows: the n-th row lists the numbers of the form n * (d-1) / d with d a positive divisor of n.

Table of values

List of values

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

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

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