A058423 - OEIS

%I #14 Aug 11 2024 14:41:33

%S 2,1498,6498,20602,148998,2006002,6343832,47351898,200060002,

%T 201002498,20000600002,46929738998,2000006000002,200000060000002,

%U 1562062816343832,20000000600000002,2000000006000000002,200000000060000000002,20000000000600000000002

%N Numbers k such that k^2 contains only digits {0,2,4}, not ending with zero.

%H Zhao Hui Du, <a href="/A058423/b058423.txt">Table of n, a(n) for n = 1..24</a>

%H P. De Geest, <a href="https://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#024">Sporadic tridigital solutions</a>

%Y Cf. A058424.

%K nonn,base

%O 1,1

%A _Patrick De Geest_, Nov 15 2000

%E a(16) and above from _Zhao Hui Du_, Mar 08 2024