a(n) = floor(c*s*a(n-1)) + floor(d*r*a(n-2)), where r = 2 + sqrt(5), s = r/(r-1), c = 4, d = 1, a(0) = 1, a(1) = 1.
A275861
a(n) = floor(c*s*a(n-1)) + floor(d*r*a(n-2)), where r = 2 + sqrt(5), s = r/(r-1), c = 4, d = 1, a(0) = 1, a(1) = 1.
Terms
- a(0) =1a(1) =1a(2) =9a(3) =51a(4) =305a(5) =1813a(6) =10784a(7) =64144a(8) =381543a(9) =2269503a(10) =13499513a(11) =80298135a(12) =477631347a(13) =2841058559a(14) =16899254596a(15) =100520563016a(16) =597918892325
External references
- oeis: A275861