45812985856domain: NAppears in sequencesa(n) = (2*8^n + 2^n)/3.at n=12A082412a(n) = 10*a(n-2) - 16*a(n-4) for n>=4, with a(0)=a(1)=1, a(2)=6, a(3)=10.at n=24A083333