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

Offset: 1

Author

Reinhard Zumkeller, Mar 14 2004

Keywords

• nonn

Comments

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

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