A039559 - OEIS

A039559

Numbers whose base-4 representation has the same number of 0's, 1's and 2's.

3, 15, 18, 24, 33, 36, 63, 75, 78, 99, 108, 114, 120, 135, 141, 147, 156, 177, 180, 198, 201, 210, 216, 225, 228, 255, 303, 315, 318, 399, 435, 444, 459, 462, 483, 492, 498, 504, 543, 567, 573, 591, 627, 636, 711, 717, 723, 732, 753, 756, 795, 798, 807, 813

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..54.

MATHEMATICA

Select[Range[900], DigitCount[#, 4, 0]==DigitCount[#, 4, 1]==DigitCount[#, 4, 2]&] (* Harvey P. Dale, Feb 26 2013 *)

CROSSREFS

Cf. A007090.

Sequence in context: A080793 A077225 A236526 * A045753 A022381 A206367

Adjacent sequences: A039556 A039557 A039558 * A039560 A039561 A039562

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved