login
A096405
Numbers having an equal number of zeros in their binary and ternary representations.
1
0, 1, 6, 7, 9, 11, 28, 45, 47, 57, 59, 60, 61, 62, 81, 83, 90, 91, 93, 95, 99, 108, 109, 110, 117, 119, 123, 171, 183, 190, 207, 219, 222, 223, 248, 303, 315, 378, 379, 381, 383, 405, 407, 411, 414, 415, 423, 447, 459, 477, 479, 488, 490, 497, 498, 499, 502, 508
OFFSET
1,3
COMMENTS
A023416(a(n)) = A077267(a(n)).
LINKS
EXAMPLE
n=60: A007088(60)='111100', A007089(60)='2020': both containing two zeros, therefore 60 is a term.
MAPLE
filter:= n -> numboccur(0, convert(n, base, 2))=numboccur(0, convert(n, base, 3)):
select(filter, [$0..1000]); # Robert Israel, Jan 16 2018
MATHEMATICA
Select[Range[0, 600], DigitCount[#, 2, 0]==DigitCount[#, 3, 0]&] (* Harvey P. Dale, Feb 02 2012 *)
CROSSREFS
Sequence in context: A095908 A094698 A361419 * A228499 A309961 A108595
KEYWORD
nonn,base
AUTHOR
Reinhard Zumkeller, Aug 07 2004
STATUS
approved