a(n) = ((6 + sqrt(8))^n + (6 - sqrt(8))^n)/2.
A147688
a(n) = ((6 + sqrt(8))^n + (6 - sqrt(8))^n)/2.
Terms
- a(0) =1a(1) =6a(2) =44a(3) =360a(4) =3088a(5) =26976a(6) =237248a(7) =2091648a(8) =18456832a(9) =162915840a(10) =1438198784a(11) =12696741888a(12) =112091336704a(13) =989587267584
External references
- oeis: A147688