OFFSET
1,1
EXAMPLE
3 is 11 in binary, 5 is 101. Because 11101 = 29d is a prime, 3 is in the sequence.
5 is 101 in binary, 7 is 111, and because 101111 = 47d is a prime, 5 is in the sequence.
CROSSREFS
KEYWORD
nonn,base,less
AUTHOR
Alex Ratushnyak, Nov 20 2013
STATUS
approved