317796domain: NAppears in sequencesNumber of strict (-1)st-order maximal independent sets in path graph.at n=25A007382F(4n) - 2n - 1 where F(n) = Fibonacci numbers. Also, the floor of the log base phi of sequence A090162 (phi = (1+Sqrt(5))/2).at n=6A114182a(n) = Fibonacci(2*n) - n - 1.at n=12A114185