A167044 Squares that remain squares when prefixed with a 9.
3025, 50625, 70225, 302500, 455625, 765625, 2640625, 5062500, 7022500, 30250000, 45562500, 76562500, 264062500, 506250000, 702250000, 3025000000, 4556250000, 7656250000, 26406250000, 34363890625, 50625000000, 70225000000, 302500000000, 455625000000
Offset: 1
Examples
3025=55^2 is a square and becomes the square 93025=305^2 if a 9 is attached in front of the decimal representation.
Links
- Chai Wah Wu, Table of n, a(n) for n = 1..1000
Extensions
Keyword:base added by R. J. Mathar, Oct 28 2009