A058442 - OEIS

%I #11 Mar 11 2024 19:45:35

%S 4,484,40804,88804,4008004,4088484,4848804,400080004,400880484,

%T 484088004,840884004,40000800004,40008800484,40080840804,40804808004,

%U 48400880004,400084080484,4000008000004,4000088000484,4000808040804

%N Squares composed of digits {0,4,8}, not ending with zero.

%H Zhao Hui Du, <a href="/A058442/b058442.txt">Table of n, a(n) for n = 1..4000</a>

%H Patrick De Geest, <a href="http://www.worldofnumbers.com/threedigits.htm">Index to related sequences</a>

%H Hisanori Mishima, <a href="http://www.asahi-net.or.jp/~KC2H-MSM/mathland/math02/math0210.htm#048">Sporadic tridigital solutions</a>

%t Select[FromDigits/@Tuples[{0,4,8},13],Mod[#,10]!=0&&IntegerQ[Sqrt[#]]&] (* _Harvey P. Dale_, Feb 14 2023 *)

%Y Cf. A058441.

%K nonn,base

%O 1,1

%A _Patrick De Geest_, Nov 15 2000