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A032937
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Numbers n such that base 2 representation Sum{d(i)*2^i: i=0,1,...,m} has d(i)=0 for all odd i.
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1
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1, 2, 4, 5, 8, 10, 16, 17, 20, 21, 32, 34, 40, 42, 64, 65, 68, 69, 80, 81, 84, 85, 128, 130, 136, 138, 160, 162, 168, 170, 256, 257, 260, 261, 272, 273, 276, 277, 320, 321, 324, 325, 336, 337, 340, 341, 512, 514, 520, 522, 544, 546
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Or, base 2 representation Sum{d(i)*2^i: i=0,1,...,m} has even d(i) for all odd i.
Union of A000695 and 2*A000695. - R. Stephan, May 05 2004
Essentially the same as A126684. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 15 2008
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PROG
| (PARI) for(n=1, 350, b=binary(n):l=length(b); if(sum(i=1, floor(l/2), component(b, 2*i))==0, print1(n, ", ")))
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CROSSREFS
| Cf. A033053.
Sequence in context: A039895 A105425 A199799 * A126684 A089653 A180252
Adjacent sequences: A032934 A032935 A032936 * A032938 A032939 A032940
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KEYWORD
| nonn,base
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AUTHOR
| Clark Kimberling (ck6(AT)evansville.edu)
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