Gaussian binomial coefficient [ n,2 ] for q=4.

A006105

Gaussian binomial coefficient [ n,2 ] for q=4.

Terms

    a(0) =1a(1) =21a(2) =357a(3) =5797a(4) =93093a(5) =1490853a(6) =23859109a(7) =381767589a(8) =6108368805a(9) =97734250405

External references