655355domain: NAppears in sequencesSequence of sums of alternating increasing powers of 2.at n=33A079360Partial sums of A162255.at n=33A164053Positions of zeros in A165477.at n=10A165478Number of idempotent 5 X 5 0..n matrices of rank 4.at n=14A224336Semiprimes that are product of a Fermat prime and a Mersenne prime.at n=22A336115