a(n) = ((7+sqrt(5))^n + (7-sqrt(5))^n)/2.
A152108
a(n) = ((7+sqrt(5))^n + (7-sqrt(5))^n)/2.
Terms
- a(0) =1a(1) =7a(2) =54a(3) =448a(4) =3896a(5) =34832a(6) =316224a(7) =2894528a(8) =26609536a(9) =245174272a(10) =2261620224a(11) =20875015168a(12) =192738922496
External references
- oeis: A152108