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A137014 Numbers k such that k and k^2 use only the digits 1, 2, 6, 7 and 8. 1

%I

%S 1,11,26,261,276,826,881,1126,1276,2681,8881,78181,78881,82261,88776,

%T 161761,261126,277826,1128126,1271881,1618276,7866881,8226276,8287811,

%U 8878126,11281276,12722681,26781761,27717826,78221881,78222681,78878881,161767681,161777261,166182811,167812776,261278181,266678126,266876126,268116881

%N Numbers k such that k and k^2 use only the digits 1, 2, 6, 7 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137014/b137014.txt">Table of n, a(n) for n = 1..237</a>

%H J. Wellons, <a href="http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a>

%e 161767617828126^2 = 26168762177786628877276671876.

%K base,nonn

%O 1,2

%A Jonathan Wellons (wellons(AT)gmail.com), Jan 22 2008

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Last modified October 23 04:06 EDT 2021. Contains 348211 sequences. (Running on oeis4.)