A066329 Binary string which equals n when 1's, 2's, 4's and 8's bits have weights 1, 1, 3, 5 respectively, while the other bits have their usual weights. -1 if no such string exists.

0, 1, 11, 100, 101, 1000, 1001, 1011, 1100, 1101, 1111, -1, -1, -1, -1, -1, 10000, 10001, 10011, 10100, 10101, 11000, 11001, 11011, 11100, 11101, 11111, -1, -1, -1, -1, -1, 100000, 100001, 100011, 100100, 100101, 101000, 101001, 101011, 101100, 101101, 101111, -1, -1, -1, -1, -1, 110000, 110001, 110011

Offset

0,3

References

John M. Yarbrough, Digital Logic Applications and Design, West Publishing, 1997, p. 26

Links

Table of n, a(n) for n=0..50.

Crossrefs

Cf. A066335.

A120631 is the decimal conversion of these binary strings.

Sequence in context: A287984 A261757 A280049 * A309870 A219896 A330898

Adjacent sequences: A066326 A066327 A066328 * A066330 A066331 A066332

Keyword

easy,sign

Author

George E. Antoniou, Dec 15 2001

Extensions

More terms from Joshua Zucker, Jun 21 2006

Status

approved