515625

Appears in sequences

• Number of ordered factorizations with 3 levels of parentheses indexed by prime signatures: A050358(A025487(n)).at n=27A050359
• 5th binomial transform of (1,4,0,0,0,0,...).at n=7A081040
• Numbers n that are the hypotenuse of exactly 6 distinct integer-sided right triangles, i.e., n^2 can be written as a sum of two squares in 6 ways.at n=22A097219
• Number of forests with two components in the complete bipartite graph K_{n,n}.at n=3A100070
• a(n) = 5*a(n-1) - 10*a(n-2), with a(0)=0, a(1)=1.at n=12A190971
• Triangular array: the fusion of polynomial sequences P and Q given by p(n,x)=(x+2)^n and q(n,x)=(x+2)^n.at n=43A193726
• Mirror of the triangle A193726.at n=37A193727