145869domain: NAppears in sequencesFibonacci sequence beginning 2, 7.at n=22A022113a(0)=2, a(1)=5, a(n+2) = a(n+1) + (-1)^n a(n).at n=44A095795a(0)=2, a(1)=5, a(n+2) = a(n+1) + (-1)^n a(n).at n=47A095795