2145541domain: NAppears in sequencesa(n) = Fibonacci(n+1) - 2^floor(n/2).at n=31A005672Diagonal sums of triangle A008949.at n=29A079284First differences of A079284.at n=30A079285a(n) = Fibonacci(2n+2)-2^n.at n=15A105693Number of integer compositions of n that are the first sums of more than one nonnegative sequence.at n=28A391682