A130281 - cp's OEIS frontend

A130281 Integers n > 1 such that A130280(4n^2) < n, i.e., there is an m < n, m > 1 such that 4n^2(m^2 - 1) + 1 is a square.

n	a(n)
1	28
2	102
3	248
4	390
5	490
6	852
7	1358
8	2032
9	2898
10	3465
11	3980
12	5302
13	5432
14	6888
15	8762
16	10948
17	13470
18	15372
19	16352
20	19618
21	23292
22	27398
23	31960
24	37002
25	42548
26	48015
27	48622
28	55248
29	62450
30	70252
31	75658
32	78678
33	87752
34	97498

[28, 102, 248, 390, 490, 852, 1358, 2032, 2898, 3465, 3980, 5302, 5432, 6888, 8762, 10948, 13470, 15372, 16352, 19618, 23292, 27398, 31960, 37002, 42548, 48015, 48622, 55248, 62450, 70252, 75658, 78678, 87752, 97498]

cp's OEIS Frontend

A130281 Integers n > 1 such that A130280(4n^2) < n, i.e., there is an m < n, m > 1 such that 4n^2(m^2 - 1) + 1 is a square.

Table of values

List of values