

A169859


Smallest nontrivial square (i.e., not of the form 10^2k, k>0) with at least n identical adjacent digits.


1



1, 144, 1444, 1666681, 111112681, 3333330225, 132922222225, 1433333333961, 2582708888888881, 28777777777780164, 88888888888905609, 2222222222222640225, 2222222222222640225
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OFFSET

1,2


LINKS



EXAMPLE

a(3) = 1444 because it has 3 adjacent 4's and no square less than 1444 has 3 adjacent digits which are the same.


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



