A073546 - cp's OEIS frontend

A073546 Triangle read by rows: row n gives denominators of n distinct unit fractions (or Egyptian fractions) summing to 1, where denominators are listed in increasing order and the largest denominator is smallest possible.

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

[2, 3, 6, 2, 4, 6, 12, 2, 4, 10, 12, 15, 3, 4, 6, 10, 12, 15, 3, 4, 9, 10, 12, 15, 18, 3, 5, 9, 10, 12, 15, 18, 20, 4, 5, 8, 9, 10, 15, 18, 20, 24, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 5, 6, 8, 9, 10, 15, 18, 20, 21, 24, 28, 6, 7, 8, 9, 10, 14, 15, 18, 20, 24, 28, 30]

cp's OEIS Frontend

A073546 Triangle read by rows: row n gives denominators of n distinct unit fractions (or Egyptian fractions) summing to 1, where denominators are listed in increasing order and the largest denominator is smallest possible.

Table of values

List of values

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

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

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