207391

Appears in sequences

• a(n) = 5*a(n-2) - 2*a(n-4), with initial terms 0,1,1,3.at n=18A005824
• a(n) = 5*a(n-1) - 2*a(n-2); a(0)=1, a(1)=5.at n=8A107839
• a(n) = 5*a(n-2) - 2*a(n-4), n >= 4.at n=16A109165
• List of quadruples (r,s,t,u): the matrix M = [[9,24,16][3,10,8][1,4,4]] is raised to successive powers, then (r,s,t,u) are the square roots of M[3,1], M[3,3], M[1,1], M[1,3] respectively.at n=36A249581
• Expansion of (1+2*x-x^3) / (1-5*x^2+2*x^4).at n=16A384611