a(n) = ((7 + sqrt(3))^n - (7 - sqrt(3))^n)/(2*sqrt(3)).

A153598

a(n) = ((7 + sqrt(3))^n - (7 - sqrt(3))^n)/(2*sqrt(3)).

Terms

    a(0) =1a(1) =14a(2) =150a(3) =1456a(4) =13484a(5) =121800a(6) =1084936a(7) =9586304a(8) =84301200a(9) =739246816a(10) =6471600224a(11) =56597049600a(12) =494665084096

External references