login
A039559
Numbers whose base-4 representation has the same number of 0's, 1's and 2's.
0
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
OFFSET
1,1
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
KEYWORD
nonn,base,easy
STATUS
approved