A048611 - cp's OEIS frontend

A048611 Find smallest pair (x,y) such that x^2 - y^2 = 11...1 (n times) = (10^n-1)/9; sequence gives value of x.

n	a(n)
1	1
2	6
3	20
4	56
5	156
6	340
7	2444
8	4440
9	167000
10	55556
11	267444
12	333400
13	132687920
14	5555556
15	10731400
16	40938800
17	2682647040
18	333334000
19	555555555555555556
20	3334367856
21	11034444280
22	35595935980
23	5555555555555555555556

[1, 6, 20, 56, 156, 340, 2444, 4440, 167000, 55556, 267444, 333400, 132687920, 5555556, 10731400, 40938800, 2682647040, 333334000, 555555555555555556, 3334367856, 11034444280, 35595935980, 5555555555555555555556]

cp's OEIS Frontend

A048611 Find smallest pair (x,y) such that x^2 - y^2 = 11...1 (n times) = (10^n-1)/9; sequence gives value of x.

Table of values

List of values