A191973 - cp's OEIS frontend

A191973 Irregular triangle read by rows: row n consists of n and the positive integers m where m-n divides m*n.

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

[1, 2, 1, 2, 3, 4, 6, 2, 3, 4, 6, 12, 2, 3, 4, 5, 6, 8, 12, 20, 4, 5, 6, 10, 30, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 15, 18, 24, 42, 6, 7, 8, 14, 56, 4, 6, 7, 8, 9, 10, 12, 16, 24, 40, 72, 6, 8, 9, 10, 12, 18, 36, 90, 5, 6, 8, 9, 10, 11, 12, 14, 15, 20, 30, 35, 60]

cp's OEIS Frontend

A191973 Irregular triangle read by rows: row n consists of n and the positive integers m where m-n divides m*n.

Table of values

List of values

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

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

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