a(n) = 5^n * T(n,7/5) where T is the Chebyshev polynomial of the first kind.
A099141
a(n) = 5^n * T(n,7/5) where T is the Chebyshev polynomial of the first kind.
Terms
- a(0) =1a(1) =7a(2) =73a(3) =847a(4) =10033a(5) =119287a(6) =1419193a(7) =16886527a(8) =200931553a(9) =2390878567a(10) =28449011113a(11) =338514191407
External references
- oeis: A099141