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A045116 Numbers n with property that in base 4 representation the numbers of 1's and 3's are 1 and 2, respectively. 0
31, 55, 61, 79, 111, 115, 123, 124, 126, 159, 183, 189, 199, 205, 211, 219, 220, 222, 231, 237, 241, 244, 246, 249, 271, 303, 307, 315, 316, 318, 399, 431, 435, 443, 444, 446, 451, 459, 460, 462, 483, 491, 492, 494, 496, 498 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..46.

MATHEMATICA

b413Q[n_]:=Module[{dc=DigitCount[n, 4]}, dc[[1]]==1&&dc[[3]]==2]; Select[ Range[500], b413Q] (* Harvey P. Dale, Oct 22 2011 *)

CROSSREFS

Sequence in context: A182380 A141856 A104332 * A092227 A220539 A193362

Adjacent sequences:  A045113 A045114 A045115 * A045117 A045118 A045119

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified August 24 17:01 EDT 2019. Contains 326295 sequences. (Running on oeis4.)