A024820 - cp's OEIS frontend

A024820 a(n) = least m such that if r and s in {1/2, 1/4, 1/6,..., 1/2n} satisfy r < s, then r < k/m < s for some integer k.

n	a(n)
2	3
3	5
4	13
5	19
6	33
7	41
8	61
9	85
10	99
11	129
12	163
13	181
14	221
15	265
16	313
17	339
18	393
19	451
20	513
21	545
22	613
23	685
24	761
25	841
26	883
27	969
28	1059
29	1153
30	1251
31	1301
32	1405
33	1513
34	1625
35	1741
36	1861
37	1923
38	2049
39	2179
40	2313
41	2451
42	2593
43	2665
44	2813
45	2965
46	3121
47	3281
48	3445
49	3613
50	3699
51	3873
52	4051
53	4233

[3, 5, 13, 19, 33, 41, 61, 85, 99, 129, 163, 181, 221, 265, 313, 339, 393, 451, 513, 545, 613, 685, 761, 841, 883, 969, 1059, 1153, 1251, 1301, 1405, 1513, 1625, 1741, 1861, 1923, 2049, 2179, 2313, 2451, 2593, 2665, 2813, 2965, 3121, 3281, 3445, 3613, 3699, 3873, 4051, 4233]

cp's OEIS Frontend

A024820 a(n) = least m such that if r and s in {1/2, 1/4, 1/6,..., 1/2n} satisfy r < s, then r < k/m < s for some integer k.

Table of values

List of values