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A039561
Numbers whose base-4 representation has the number of 0's, 2's and 3's.
0
1, 5, 21, 35, 44, 50, 56, 75, 78, 85, 99, 108, 114, 120, 135, 141, 147, 156, 177, 180, 198, 201, 210, 216, 225, 228, 283, 286, 295, 301, 310, 313, 331, 334, 341, 355, 364, 370, 376, 391, 397, 403, 412, 433, 436, 454, 457, 466, 472, 481, 484, 535, 541, 565
OFFSET
1,2
MATHEMATICA
Select[Range[600], DigitCount[#, 4, 0]==DigitCount[#, 4, 2]==DigitCount[#, 4, 3]&] (* Harvey P. Dale, May 30 2017 *)
CROSSREFS
Cf. A007090.
Sequence in context: A317039 A317693 A145026 * A063575 A302873 A170837
KEYWORD
nonn,base,easy
STATUS
approved