1,1

Intersection of A085722 and A092559.

11 is OK because 11^2+1=122=2*61 (semiprime), and 2^11+1=2049=3*683 (semiprime).

Cf. A085722, A092559.

Adjacent sequences: A115395 A115396 A115397 this_sequence A115399 A115400 A115401

Sequence in context: A006538 A066281 A072063 this_sequence A014597 A130603 A069977

more,nonn

Zak Seidov (zakseidov(AT)yahoo.com), Mar 08 2006