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%I #18 Jan 30 2022 09:52:07
%S 1,225,3330625,44448889,55555432804,6666662032144,77777777127241,
%T 8888888859057216,99999999989350756,
%U 101010101010101010103146096508501770025,1111111111111111111111185920458269940592889,121212121212121212121212460158453802091945103889
%N Smallest square beginning with n copies of n.
%C From a(1) up to a(12), except for n = 7, these smallest squares begin with exactly n copies of n, but a(7) begins with 8 copies of 7. What is the smallest square beginning with exactly 7 copies of 7? - _Bernard Schott_, Jan 29 2022
%C 27888667^2 = 777777747036889 begins with exactly 7 copies of 7. - _Michel Marcus_, Jan 30 2022
%Y Cf. A077730.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_, Nov 19 2002
%E Corrected and extended by _Sascha Kurz_, Jan 04 2003
%E a(11)-a(12) from _Bernard Schott_, Jan 29 2022
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