A376168 - cp's OEIS frontend

A376168 Irregular triangle read by rows: row n lists all of the integer pairs (a,b) such that 1/a + 1/b = 1/n, sorted by a.

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

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

cp's OEIS Frontend

A376168 Irregular triangle read by rows: row n lists all of the integer pairs (a,b) such that 1/a + 1/b = 1/n, sorted by a.

Table of values

List of values

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

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

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