86267571271domain: NAppears in sequencesa(n) = Fibonacci(2*n+2) - 1.at n=26A035508a(n) = Fibonacci(4n+2) - 1, or Fibonacci(2n)*Lucas(2n+2).at n=13A081008a(n) = F(n)*L(n+2) where F=Fibonacci and L=Lucas numbers.at n=26A128533a(n) = Fibonacci(2*n) - (n mod 2).at n=26A192068