A281531 - cp's OEIS frontend

A281531 a(n) is the least numerator k such that the proper fraction k/n needs three or more terms as an Egyptian fraction, or 0 if no such numerator exists.

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

[0, 0, 0, 4, 0, 3, 7, 7, 8, 5, 11, 3, 6, 7, 7, 4, 13, 3, 13, 9, 5, 5, 17, 4, 6, 8, 12, 4, 14, 3, 7, 5, 8, 11, 17, 3, 6, 9, 17, 4, 18, 3, 7, 11, 7, 5, 21, 3, 8, 7, 11, 4, 13, 9, 13, 7, 7, 7, 28, 3, 5, 13, 7, 4, 10, 3, 11, 11, 13, 5, 23, 3, 6, 11, 9, 5, 11, 3, 19]

cp's OEIS Frontend

A281531 a(n) is the least numerator k such that the proper fraction k/n needs three or more terms as an Egyptian fraction, or 0 if no such numerator exists.

Table of values

List of values

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

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

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