|
%I #12 Mar 15 2024 02:24:12
%S 625,62500,6250000,58140625,625000000,5814062500,6703515625,
%T 62500000000,581406250000,670351562500,6250000000000,58140625000000,
%U 67035156250000,539545791015625,625000000000000,5814062500000000,6703515625000000,53954579101562500
%N Squares that remain squares when prefixed with a 5.
%C Numbers s of A000290 such that 5*10^A055642(s)+s is also in A000290.
%H Chai Wah Wu, <a href="/A167039/b167039.txt">Table of n, a(n) for n = 1..1000</a>
%e 625 = 25^2 is a square and becomes the square 5625 = 75^2 if a 5 is attached in front of its decimal representation.
%K nonn,base
%O 1,1
%A _Claudio Meller_, Oct 27 2009
%E Keyword:base added by _R. J. Mathar_, Oct 28 2009
%E More terms from _Chai Wah Wu_, Sep 11 2014
|
