a(0)=1, a(1)=5, a(n) = sum_{k=0}^{k=n-1} 5^k a(k).
A015490
a(0)=1, a(1)=5, a(n) = sum_{k=0}^{k=n-1} 5^k a(k).
Terms
- a(0) =1a(1) =5a(2) =26a(3) =676a(4) =85176a(5) =53320176a(6) =166678870176
External references
- oeis: A015490
A015490
a(0)=1, a(1)=5, a(n) = sum_{k=0}^{k=n-1} 5^k a(k).