A024843 - cp's OEIS frontend

A024843 a(n) = least m such that if r and s in {1/1, 1/2, 1/3, ..., 1/n} satisfy r < s, then r < k/m < (k+3)/m < s for some integer k.

n	a(n)
2	9
3	23
4	43
5	69
6	101
7	139
8	183
9	233
10	289
11	361
12	431
13	518
14	601
15	703
16	799
17	916
18	1025
19	1157
20	1279
21	1426
22	1561
23	1723
24	1871
25	2048
26	2209
27	2401
28	2601
29	2783
30	2998
31	3221
32	3423
33	3661
34	3907
35	4129
36	4390
37	4659
38	4901
39	5185
40	5477
41	5739
42	6046
43	6361
44	6643
45	6973
46	7311
47	7613
48	7966
49	8327
50	8649

[9, 23, 43, 69, 101, 139, 183, 233, 289, 361, 431, 518, 601, 703, 799, 916, 1025, 1157, 1279, 1426, 1561, 1723, 1871, 2048, 2209, 2401, 2601, 2783, 2998, 3221, 3423, 3661, 3907, 4129, 4390, 4659, 4901, 5185, 5477, 5739, 6046, 6361, 6643, 6973, 7311, 7613, 7966, 8327, 8649]

cp's OEIS Frontend

A024843 a(n) = least m such that if r and s in {1/1, 1/2, 1/3, ..., 1/n} satisfy r < s, then r < k/m < (k+3)/m < s for some integer k.

Table of values

List of values