OFFSET
1,1
EXAMPLE
59, a prime, in binary is 111011. There is a run of three 1's, followed by a run of one 0, followed by a run of two 1's. There is only one other permutation of these runs that starts with a run of 1's, is followed by a run of the single 0, and finishes with a run of 1s. The other such binary number is 110111, which is 55. Since 55 is composite, then 59 is in this sequence.
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Leroy Quet, Jul 14 2009
EXTENSIONS
Extended by Ray Chandler, Dec 18 2009
STATUS
approved