A031451 Numbers whose base-2 representation has 4 fewer 0's than 1's.

15, 47, 55, 59, 61, 62, 159, 175, 183, 187, 189, 190, 207, 215, 219, 221, 222, 231, 235, 237, 238, 243, 245, 246, 249, 250, 252, 575, 607, 623, 631, 635, 637, 638, 671, 687, 695, 699, 701, 702, 719, 727, 731, 733, 734, 743, 747

Offset

1,1

Links

Table of n, a(n) for n=1..47.

Mathematica

Select[Range[750], DigitCount[#, 2, 1]-DigitCount[#, 2, 0]==4&] (* Harvey P. Dale, Jan 28 2012 *)

Crossrefs

Cf. A007088.

Sequence in context: A269013 A041438 A045111 * A105572 A143031 A214675

Adjacent sequences: A031448 A031449 A031450 * A031452 A031453 A031454

Keyword

nonn,base

Author

Clark Kimberling

Status

approved