a(0)=1, a(1)=36, a(n)=204*a(n-2).

A120465

a(0)=1, a(1)=36, a(n)=204*a(n-2).

Terms

    a(0) =1a(1) =36a(2) =204a(3) =7344a(4) =41616a(5) =1498176a(6) =8489664a(7) =305627904a(8) =1731891456a(9) =62348092416a(10) =353305857024

External references