This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A167044 #12 Mar 15 2024 02:24:27 %S A167044 3025,50625,70225,302500,455625,765625,2640625,5062500,7022500, %T A167044 30250000,45562500,76562500,264062500,506250000,702250000,3025000000, %U A167044 4556250000,7656250000,26406250000,34363890625,50625000000,70225000000,302500000000,455625000000 %N A167044 Squares that remain squares when prefixed with a 9. %H A167044 Chai Wah Wu, <a href="/A167044/b167044.txt">Table of n, a(n) for n = 1..1000</a> %e A167044 3025=55^2 is a square and becomes the square 93025=305^2 if a 9 is attached in front of the decimal representation. %K A167044 nonn,base %O A167044 1,1 %A A167044 _Claudio Meller_, Oct 27 2009 %E A167044 Keyword:base added by _R. J. Mathar_, Oct 28 2009