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A036515
Smallest square containing exactly n 8's.
5
81, 6889, 88804, 1898884, 78818884, 878588881, 88888055881, 388888184881, 86888087818884, 788088668888889, 8858888198858889, 108818889888588889, 18848488888038898881, 868968788888888880481, 3888888880378818878884, 22886882888858888885881
OFFSET
1,1
COMMENTS
a(21) > 10^28. - Giovanni Resta, Jul 27 2018
LINKS
MATHEMATICA
a[n_] := Block[{k=1}, While[DigitCount[k^2, 10, 8] != n, k++]; k^2]; Array[a, 6] (* Giovanni Resta, Jul 27 2018 *)
CROSSREFS
Cf. A048353. - Jon E. Schoenfield, Jan 24 2009
Sequence in context: A089683 A183506 A099372 * A223553 A185770 A222441
KEYWORD
nonn,base
EXTENSIONS
More terms from Jon E. Schoenfield, Jan 24 2009
a(16) from Giovanni Resta, Jul 27 2018
STATUS
approved