Gaussian binomial coefficient [ n,n/2 ] for q=5.

A006115

Gaussian binomial coefficient [ n,n/2 ] for q=5.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =31a(4) =806a(5) =20306a(6) =2558556a(7) =320327931a(8) =200525284806

External references