45465

Appears in sequences

• a(n) = 5*a(n-2) - 2*a(n-4), with initial terms 0,1,1,3.at n=16A005824
• Expansion of 1/((1-x)*(1-5*x)*(1-6*x)*(1-10*x)).at n=4A022343
• a(n) = 5*a(n-1) - 2*a(n-2); a(0)=1, a(1)=5.at n=7A107839
• a(n) = 5*a(n-2) - 2*a(n-4), n >= 4.at n=14A109165
• Expansion of e.g.f. cosh( x^2/2 )/ (1-x).at n=8A193385
• Number of 0..6 arrays x(0..n+1) of n+2 elements without any two consecutive increases or two consecutive decreases.at n=3A200836
• T(n,k)=Number of 0..k arrays x(0..n+1) of n+2 elements without any two consecutive increases or two consecutive decreases.at n=39A200838
• Number of 0..n arrays x(0..5) of 6 elements without any two consecutive increases or two consecutive decreases.at n=5A200841
• 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=32A249581
• Array read by antidiagonals: T(m,n) is the number of connected spanning subgraphs in the grid graph P_m X P_n.at n=37A359993
• Array read by antidiagonals: T(m,n) is the number of connected spanning subgraphs in the grid graph P_m X P_n.at n=43A359993
• Expansion of (1+2*x-x^3) / (1-5*x^2+2*x^4).at n=14A384611