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 A036513 Smallest square containing exactly n 6's. 3
 16, 676, 46656, 1666681, 26666896, 4666665969, 26661664656, 616686666436, 12666666068676, 696626660666596, 16666569616666761, 64666665664666569, 666566667666656964, 16656666666663616576, 6466267667066666666596, 46366666666326666766276 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS a(21) > 10^28. - Giovanni Resta, Jul 27 2018 LINKS Giovanni Resta, Table of n, a(n) for n = 1..20 MATHEMATICA a[n_] := Block[{k=1}, While[DigitCount[k^2, 10, 6] != n, k++]; k^2]; Array[a, 6] (* Giovanni Resta, Jul 27 2018 *) CROSSREFS Cf. A048351. - Jon E. Schoenfield, Jan 24 2009 Sequence in context: A014733 A053907 A222139 * A123824 A198283 A283534 Adjacent sequences:  A036510 A036511 A036512 * A036514 A036515 A036516 KEYWORD nonn,base AUTHOR EXTENSIONS a(13)-a(15) from Jon E. Schoenfield, Jan 14 2009 a(16) from Giovanni Resta, Jul 27 2018 STATUS approved

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Last modified January 21 11:21 EST 2019. Contains 319354 sequences. (Running on oeis4.)