A137049 - OEIS

%I #7 Apr 12 2024 09:51:27

%S 1,88,888,4141,7471,7588,8471,8878,418878,747588,758141,4145771,

%T 8478141,41458141,41818878,41855488,74485888,718158141,744411478,

%U 747541141,878148141,887574141,888154141,4144585478,7444115471,8454854141,8881151478,74711811488,75877847588,84745157471,84785445771,88155858878,88157571888

%N Numbers k such that k and k^2 use only the digits 1, 4, 5, 7 and 8.

%C Generated with DrScheme.

%H Jonathan Wellons, <a href="/A137049/b137049.txt">Table of n, a(n) for n = 1..77</a>

%H J. Wellons, <a href="https://web.archive.org/web/20090206165028/http://jonathanwellons.com/shared-digits/">Tables of Shared Digits</a> [archived]

%e 718174181415471^2 = 515774154851781851481118151841.

%K base,nonn

%O 1,2

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