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A058437 Numbers k such that k^2 contains only digits {0,4,6}, not ending with zero. 2

%I #11 Mar 08 2024 20:36:28

%S 2,8,20992,21602,215408,800037502,21120134092,25815899102,80025400008,

%T 8000254000008,25815577558262,254166490010002,254243985975008,

%U 683085646609592,800002540000008,80000025400000008,635613598504629262,2457776365832743262,2542962918459579238

%N Numbers k such that k^2 contains only digits {0,4,6}, not ending with zero.

%H Zhao Hui Du, <a href="/A058437/b058437.txt">Table of n, a(n) for n = 1..25</a>

%H P. 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#046">Sporadic tridigital solutions</a>

%Y Cf. A058438.

%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

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Last modified July 16 12:01 EDT 2024. Contains 374348 sequences. (Running on oeis4.)