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A039006
Numbers whose base-4 representation has the same number of 2's and 3's.
1
0, 1, 4, 5, 11, 14, 16, 17, 20, 21, 27, 30, 35, 39, 44, 45, 50, 54, 56, 57, 64, 65, 68, 69, 75, 78, 80, 81, 84, 85, 91, 94, 99, 103, 108, 109, 114, 118, 120, 121, 131, 135, 140, 141, 147, 151, 156, 157, 175, 176, 177, 180, 181, 187, 190, 194, 198, 200, 201, 210
OFFSET
1,3
LINKS
MATHEMATICA
Select[Range[0, 250], DigitCount[#, 4, 2]==DigitCount[#, 4, 3]&] (* Harvey P. Dale, Mar 19 2017 *)
CROSSREFS
Cf. A000302, A052539 (subsequences).
Sequence in context: A216562 A174009 A370980 * A191209 A262901 A287574
KEYWORD
nonn,base,easy
STATUS
approved