%I #12 Jan 14 2023 08:44:00
%S 1,121,1444,44944,6441444,47444544,4434494464,44424414441,
%T 1113111511681,22222220262025,444431244445444,22292262226224225,
%U 441544444344443449,1113101111111117041,2222222222222640225,11111119101145491111121
%N a(n) = smallest square containing n copies of the same nonzero digit.
%e a(9) = 1113111511681 because there is no smaller square number with 9 copies of the same nonzero digit. a(9) has 9 1's.
%Y Cf. A036508, A036509, A036510, A036511, A036512, A036513, A036514, A036515, A036516. - _Jon E. Schoenfield_, Jan 14 2009
%K nonn,base,more
%O 1,2
%A _Randy L. Ekl_, Apr 17 2008
%E Edited by _N. J. A. Sloane_ at the suggestion of _Jon E. Schoenfield_, Jan 11 2009
%E a(12)-a(15) from _Jon E. Schoenfield_, Jan 14 2009
%E a(16) from _Jon E. Schoenfield_, Jan 17 2009