152869domain: NAppears in sequencesa(n) = floor((7*2^(n+1)-9*n-10)/3).at n=15A005262Fibonacci sequence beginning 14831,41069.at n=4A177412a(n) is the binary XOR of all n-bit squares, with a(2)=0 indicating that no 2-bit squares exist.at n=17A298816