A057894 Negabinary numbral "primes".

2, 5, 6, 7, 9, 13, 15, 17, 23, 27, 29, 31, 33, 39, 43, 47, 51, 53, 55, 57, 61, 71, 77, 79, 83, 87, 89, 91, 99, 101, 107, 109, 115, 117, 121, 127, 129, 139, 141, 147, 149, 151, 167, 169, 173, 181, 185, 191, 197, 199, 201, 203, 205, 209, 213, 223, 227, 233, 239, 241

Offset

0,1

Comments

"Primes" have no other distinct divisors, up to multiplication by units. (Units are [1]=1 and [3]=-1.)

Links

Table of n, a(n) for n=0..59.

Example

[2]=-2, [5]=5, [6]=2, [7]=3, [9]=-7, [13]=-3, etc

Crossrefs

A005351, A005352, A057892, A057893.

Sequence in context: A047324 A327184 A362265 * A057694 A049303 A177987

Adjacent sequences: A057891 A057892 A057893 * A057895 A057896 A057897

Keyword

easy,nonn

Author

Marc LeBrun, Sep 25 2000

Status

approved