A161397 a(n) = the smallest positive integer that contains the same number of (non-leading) 0's as n when a(n) and n are written in binary, is not coprime to n, and is not a divisor of n.
6, 15, 10, 30, 14, 63, 18, 12, 4, 55, 9, 247, 6, 63, 34, 85, 8, 57, 8, 9, 4, 253, 18, 10, 4, 6, 10, 1015, 14, 1023, 66, 36, 16, 20, 16, 185, 8, 9, 16, 205, 8, 215, 8, 10, 4, 14335, 33, 35, 8, 9, 8, 159, 4, 30, 18, 9, 4, 767, 9, 4087, 6, 15, 130, 80, 32, 201, 32, 33, 16, 213, 32, 730
Offset: 2
Links
- H. v. Eitzen, Table of n, a(n) for n = 2..10000.
Extensions
a(1) is undefined; offset corrected by Hagen von Eitzen, Jun 20 2009
Corrected and extended using terms from b-file. - N. J. A. Sloane, Aug 31 2009