A024835 - cp's OEIS frontend

A024835 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 < (k+1)/m < s for some integer k.

n	a(n)
2	7
3	17
4	31
5	49
6	81
7	111
8	157
9	197
10	257
11	307
12	381
13	441
14	529
15	625
16	703
17	813
18	931
19	1025
20	1157
21	1297
22	1407
23	1561
24	1723
25	1849
26	2025
27	2209
28	2401
29	2551
30	2757
31	2971
32	3193
33	3365
34	3601
35	3845
36	4097
37	4291
38	4557
39	4831
40	5113
41	5329
42	5625
43	5929
44	6241
45	6561
46	6807
47	7141
48	7483
49	7833

[7, 17, 31, 49, 81, 111, 157, 197, 257, 307, 381, 441, 529, 625, 703, 813, 931, 1025, 1157, 1297, 1407, 1561, 1723, 1849, 2025, 2209, 2401, 2551, 2757, 2971, 3193, 3365, 3601, 3845, 4097, 4291, 4557, 4831, 5113, 5329, 5625, 5929, 6241, 6561, 6807, 7141, 7483, 7833]

cp's OEIS Frontend

A024835 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 < (k+1)/m < s for some integer k.

Table of values

List of values