A216993 - cp's OEIS frontend

A216993 Triangle read by rows in which row n gives the lexicographically earliest denominators with the least possible maximum value among all n-term Egyptian fractions with unit sum.

n	a(n)
1	1
2	0
3	0
4	2
5	3
6	6
7	2
8	4
9	6
10	12
11	2
12	4
13	10
14	12
15	15
16	3
17	4
18	6
19	10
20	12
21	15
22	3
23	4
24	9
25	10
26	12
27	15
28	18
29	3
30	5
31	9
32	10
33	12
34	15
35	18
36	20
37	4
38	5
39	8
40	9
41	10
42	15
43	18
44	20
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	5
57	6
58	8
59	9
60	10
61	15
62	18
63	20
64	21
65	24
66	28
67	4
68	8
69	9
70	10
71	12
72	15
73	18
74	20
75	21
76	24
77	28
78	30
79	4
80	8
81	9
82	11
83	12
84	18
85	20
86	21
87	22
88	24
89	28
90	30
91	33

[1, 0, 0, 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, 4, 8, 9, 10, 12, 15, 18, 20, 21, 24, 28, 30, 4, 8, 9, 11, 12, 18, 20, 21, 22, 24, 28, 30, 33]

cp's OEIS Frontend

A216993 Triangle read by rows in which row n gives the lexicographically earliest denominators with the least possible maximum value among all n-term Egyptian fractions with unit sum.

Table of values

List of values

n	a(n)
1	1
2	0
3	0
4	2
5	3
6	6
7	2
8	4
9	6
10	12
11	2
12	4
13	10
14	12
15	15
16	3
17	4
18	6
19	10
20	12
21	15
22	3
23	4
24	9
25	10
26	12
27	15
28	18
29	3
30	5
31	9
32	10
33	12
34	15
35	18
36	20
37	4
38	5
39	8
40	9
41	10
42	15
43	18
44	20
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	5
57	6
58	8
59	9
60	10
61	15
62	18
63	20
64	21
65	24
66	28
67	4
68	8
69	9
70	10
71	12
72	15
73	18
74	20
75	21
76	24
77	28
78	30
79	4
80	8
81	9
82	11
83	12
84	18
85	20
86	21
87	22
88	24
89	28
90	30
91	33

n	a(n)
1	1
2	0
3	0
4	2
5	3
6	6
7	2
8	4
9	6
10	12
11	2
12	4
13	10
14	12
15	15
16	3
17	4
18	6
19	10
20	12
21	15
22	3
23	4
24	9
25	10
26	12
27	15
28	18
29	3
30	5
31	9
32	10
33	12
34	15
35	18
36	20
37	4
38	5
39	8
40	9
41	10
42	15
43	18
44	20
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	5
57	6
58	8
59	9
60	10
61	15
62	18
63	20
64	21
65	24
66	28
67	4
68	8
69	9
70	10
71	12
72	15
73	18
74	20
75	21
76	24
77	28
78	30
79	4
80	8
81	9
82	11
83	12
84	18
85	20
86	21
87	22
88	24
89	28
90	30
91	33

n	a(n)
1	1
2	0
3	0
4	2
5	3
6	6
7	2
8	4
9	6
10	12
11	2
12	4
13	10
14	12
15	15
16	3
17	4
18	6
19	10
20	12
21	15
22	3
23	4
24	9
25	10
26	12
27	15
28	18
29	3
30	5
31	9
32	10
33	12
34	15
35	18
36	20
37	4
38	5
39	8
40	9
41	10
42	15
43	18
44	20
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	5
57	6
58	8
59	9
60	10
61	15
62	18
63	20
64	21
65	24
66	28
67	4
68	8
69	9
70	10
71	12
72	15
73	18
74	20
75	21
76	24
77	28
78	30
79	4
80	8
81	9
82	11
83	12
84	18
85	20
86	21
87	22
88	24
89	28
90	30
91	33