274877911040domain: NAppears in sequencesa(n) = (8^n + 2^n)/2.at n=13A081342a(n) = 10*a(n-2) - 16*a(n-4) for n > 3, a(0) = 1, a(1) = 5, a(2) = 14, a(3) = 34.at n=25A083332