a(n) = -(sin(2*n*arccos(sqrt(3))))^2.

A173115

a(n) = -(sin(2*n*arccos(sqrt(3))))^2.

Terms

    a(0) =0a(1) =24a(2) =2400a(3) =235224a(4) =23049600a(5) =2258625624a(6) =221322261600

External references