13354112

Appears in sequences

• a(n) = 2*Fibonacci(n)^2.at n=18A175395
• Coefficient of x in the reduction by (x^2->x+1) of the polynomial p(n,x) given in Comments.at n=18A192873
• a(n) = a(n-1) + a(n-3) + a(n-4), where a(0) = 0, a(1) = 0, a(2) = 0, a(3) = 2.at n=37A295680