A039006 Numbers whose base-4 representation has the same number of 2's and 3's.
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
Links
- Daniel Starodubtsev, Table of n, a(n) for n = 1..10000
Programs
-
Mathematica
Select[Range[0,250],DigitCount[#,4,2]==DigitCount[#,4,3]&] (* Harvey P. Dale, Mar 19 2017 *)