A093009 - OEIS

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A093009

Smallest number m such that m is prime iff n is not prime and the binary representation of m equals n with appended trailing 1's.

3, 95, 15, 19, 95, 13, 15, 17, 19, 43, 95, 103, 27, 29, 31, 67, 35, 37, 39, 41, 43, 367, 95, 199, 103, 53, 223, 463, 119, 61, 63, 131, 67, 139, 71, 73, 75, 311, 79, 163, 335, 5503, 87, 89, 367, 751, 95, 97, 199, 101, 103, 211, 215, 109, 223, 113, 463, 241663

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OFFSET

1,1

COMMENTS

a(n) = Max{A093007(n), A038699(n)};

n>1: A070939(a(n))=A070939(n)+A093008(n), A000120(a(n))=A000120(n)+A093008(n).

LINKS

Table of n, a(n) for n=1..58.

CROSSREFS

Sequence in context: A142887 A297489 A241752 * A373551 A273442 A322460

Adjacent sequences: A093006 A093007 A093008 * A093010 A093011 A093012

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Mar 14 2004

STATUS

approved