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A136318 Integers whose binary representation contains exactly two 1s, the 1s not being adjacent. 1
5, 9, 10, 17, 18, 20, 33, 34, 36, 40, 65, 66, 68, 72, 80, 129, 130, 132, 136, 144, 160, 257, 258, 260, 264, 272, 288, 320, 513, 514, 516, 520, 528, 544, 576, 640, 1025, 1026, 1028, 1032, 1040, 1056, 1088, 1152, 1280, 2049, 2050, 2052, 2056, 2064, 2080, 2112, 2176 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Gil Broussard, Mar 24 2008, Table of n, a(n) for n = 1..99

EXAMPLE

a(1) = 5 = 101b.

a(2) = 9 = 1001b.

a(3) = 10 = 1010b.

a(100) = 33024 = 1000000100000000b.

MATHEMATICA

Select[Range[2500], DigitCount[#, 2, 1]==2&&SequenceCount[IntegerDigits[#, 2], {1, 1}]==0&] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Oct 25 2017 *)

CROSSREFS

Sequence in context: A266399 A164709 A212314 * A242139 A216765 A117771

Adjacent sequences:  A136315 A136316 A136317 * A136319 A136320 A136321

KEYWORD

base,nonn

AUTHOR

Gil Broussard, Mar 24 2008

STATUS

approved

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Last modified December 9 09:37 EST 2021. Contains 349627 sequences. (Running on oeis4.)