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A045021 Numbers n with property that in base 4 representation the numbers of 0's and 1's are 1 and 3, respectively. 1
69, 81, 84, 278, 279, 281, 285, 293, 309, 326, 327, 329, 333, 338, 339, 344, 348, 353, 356, 369, 372, 389, 401, 404, 453, 465, 468, 533, 581, 593, 596, 789, 837, 849, 852, 1114, 1115, 1118, 1119, 1126, 1127, 1129, 1133, 1142 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..9000

MATHEMATICA

Select[Range[10000], DigitCount[#, 4, 0] == 1 && DigitCount[#, 4, 1] == 3 &] (* Vincenzo Librandi, Sep 21 2016 *)

CROSSREFS

Sequence in context: A235226 A015980 A065209 * A254712 A197172 A253154

Adjacent sequences:  A045018 A045019 A045020 * A045022 A045023 A045024

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 31 22:39 EDT 2021. Contains 346377 sequences. (Running on oeis4.)