A216975 - cp's OEIS frontend

A216975 Triangle read by rows in which row n gives the lexicographically earliest minimal sum denominators among all possible 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	3
12	4
13	5
14	6
15	20
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	4
30	5
31	6
32	9
33	10
34	15
35	18
36	20
37	4
38	6
39	8
40	9
41	10
42	12
43	15
44	18
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	6
57	7
58	8
59	9
60	10
61	12
62	14
63	15
64	18
65	24
66	28
67	6
68	7
69	9
70	10
71	11
72	12
73	14
74	15
75	18
76	22
77	28
78	33
79	7
80	8
81	9
82	10
83	11
84	12
85	14
86	15
87	18
88	22
89	24
90	28
91	33

[1, 0, 0, 2, 3, 6, 2, 4, 6, 12, 3, 4, 5, 6, 20, 3, 4, 6, 10, 12, 15, 3, 4, 9, 10, 12, 15, 18, 4, 5, 6, 9, 10, 15, 18, 20, 4, 6, 8, 9, 10, 12, 15, 18, 24, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 6, 7, 8, 9, 10, 12, 14, 15, 18, 24, 28, 6, 7, 9, 10, 11, 12, 14, 15, 18, 22, 28, 33, 7, 8, 9, 10, 11, 12, 14, 15, 18, 22, 24, 28, 33]

cp's OEIS Frontend

A216975 Triangle read by rows in which row n gives the lexicographically earliest minimal sum denominators among all possible 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	3
12	4
13	5
14	6
15	20
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	4
30	5
31	6
32	9
33	10
34	15
35	18
36	20
37	4
38	6
39	8
40	9
41	10
42	12
43	15
44	18
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	6
57	7
58	8
59	9
60	10
61	12
62	14
63	15
64	18
65	24
66	28
67	6
68	7
69	9
70	10
71	11
72	12
73	14
74	15
75	18
76	22
77	28
78	33
79	7
80	8
81	9
82	10
83	11
84	12
85	14
86	15
87	18
88	22
89	24
90	28
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	3
12	4
13	5
14	6
15	20
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	4
30	5
31	6
32	9
33	10
34	15
35	18
36	20
37	4
38	6
39	8
40	9
41	10
42	12
43	15
44	18
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	6
57	7
58	8
59	9
60	10
61	12
62	14
63	15
64	18
65	24
66	28
67	6
68	7
69	9
70	10
71	11
72	12
73	14
74	15
75	18
76	22
77	28
78	33
79	7
80	8
81	9
82	10
83	11
84	12
85	14
86	15
87	18
88	22
89	24
90	28
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	3
12	4
13	5
14	6
15	20
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	4
30	5
31	6
32	9
33	10
34	15
35	18
36	20
37	4
38	6
39	8
40	9
41	10
42	12
43	15
44	18
45	24
46	5
47	6
48	8
49	9
50	10
51	12
52	15
53	18
54	20
55	24
56	6
57	7
58	8
59	9
60	10
61	12
62	14
63	15
64	18
65	24
66	28
67	6
68	7
69	9
70	10
71	11
72	12
73	14
74	15
75	18
76	22
77	28
78	33
79	7
80	8
81	9
82	10
83	11
84	12
85	14
86	15
87	18
88	22
89	24
90	28
91	33