24157815

Appears in sequences

• a(n) = Fibonacci(n+3) - 2.at n=34A001911
• Expansion of (1-x)/(1-2*x^2-x^3).at n=39A078024
• a(n) = Fibonacci(4n+1) - 2, or Fibonacci(2n+2)*Lucas(2n-1).at n=8A081012
• Number of compositions of n into parts 1 and 2 with both parts present.at n=33A245738
• a(n) = a(n-1) + a(n-2) - a(n-3) + a(n-4) + a(n-5), with a(0)=a(1)=a(2)=1, a(3)=-1 and a(4)=1.at n=39A290968