54931640625
domain: N
Appears in sequences
- Reciprocal of n terminates with an infinite repetition of digit 4. Multiples of 10 are omitted.at n=7A064563
- Fifth column of triangle A067402.at n=8A067405
- Number of nX3 array permutations with each element not moved or moved diagonally or antidiagonally by one.at n=15A189274
- Expansion of g.f. (1+4*x)/(1-5*x).at n=15A270567
- Hypotenuses for which there exist exactly 14 distinct integer triangles.at n=7A290502