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A045090 Numbers n with property that in base 4 representation the numbers of 1's and 2's are 1 and 0, respectively. 0
1, 4, 7, 13, 16, 19, 28, 31, 49, 52, 55, 61, 64, 67, 76, 79, 112, 115, 124, 127, 193, 196, 199, 205, 208, 211, 220, 223, 241, 244, 247, 253, 256, 259, 268, 271, 304, 307, 316, 319, 448, 451, 460, 463, 496, 499, 508, 511, 769, 772 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..50.

MATHEMATICA

Select[Range[800], DigitCount[#, 4, 1]==1&&DigitCount[#, 4, 2]==0&] (* Harvey P. Dale, Jan 11 2013 *)

CROSSREFS

Sequence in context: A084089 A202822 A137827 * A213382 A258867 A074273

Adjacent sequences:  A045087 A045088 A045089 * A045091 A045092 A045093

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 5 10:33 EDT 2020. Contains 333239 sequences. (Running on oeis4.)