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A072579
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In binary representation: n has the same number of 1's as the n-th prime has 0's.
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4
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1, 7, 13, 26, 37, 41, 42, 45, 49, 50, 58, 59, 62, 69, 70, 74, 78, 79, 87, 103, 105, 107, 110, 114, 118, 121, 134, 139, 141, 142, 145, 147, 158, 161, 162, 164, 165, 168, 175, 185, 189, 198, 202, 203, 213, 214, 223, 227, 232, 234, 243, 267, 275, 282, 289, 292
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OFFSET
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1,2
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COMMENTS
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A023416(A072582(n))=A000120(a(n))=A035103(n);
a(n)=A049084(A072582(n)).
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LINKS
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Table of n, a(n) for n=1..56.
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EXAMPLE
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In binary representation 70='1000110' has three 1's and A000040(70)=349='101011101' has three 1's: therefore 70 is a term.
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MATHEMATICA
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Select[Range[300], DigitCount[#, 2, 1]==DigitCount[Prime[#], 2, 0]&] (* From Harvey P. Dale, May 02 2012 *)
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CROSSREFS
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Cf. A072578, A071600, A072577.
Sequence in context: A213663 A060455 A205541 * A067870 A147258 A146718
Adjacent sequences: A072576 A072577 A072578 * A072580 A072581 A072582
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KEYWORD
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nonn
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AUTHOR
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Reinhard Zumkeller, Jun 23 2002
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STATUS
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approved
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