228765625
domain: N
Appears in sequences
- a(n) = Product_{k=1..n} (1 + 4*sin(2*Pi*k/n)^2).at n=20A152152
- Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having index change +-(.,.) 0,0 1,2 or 2,2.at n=4A264021
- Squares k such that phi(k) is a cube.at n=24A358051
- Powers k^m, m > 1, where k is an odd Achilles number.at n=15A391375