A048612 - cp's OEIS frontend

A048612 Find smallest pair (x,y) such that x^2-y^2 = 11...1 (n times) = (10^n-1)/9; sequence gives value of y.

n	a(n)
1	0
2	5
3	17
4	45
5	115
6	67
7	2205
8	2933
9	166667
10	44445
11	245795
12	6667
13	132683733
14	4444445
15	2012917
16	23767083
17	2680575317
18	666667
19	555555555555555555
20	83053525
21	3263104267
22	12488376483
23	5555555555555555555555
24	66666667
25	2952525627555

[0, 5, 17, 45, 115, 67, 2205, 2933, 166667, 44445, 245795, 6667, 132683733, 4444445, 2012917, 23767083, 2680575317, 666667, 555555555555555555, 83053525, 3263104267, 12488376483, 5555555555555555555555, 66666667, 2952525627555]

cp's OEIS Frontend

A048612 Find smallest pair (x,y) such that x^2-y^2 = 11...1 (n times) = (10^n-1)/9; sequence gives value of y.

Table of values

List of values