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