Binomial coefficient C(7n,n-6).

A004374

Binomial coefficient C(7n,n-6).

Terms

    a(0) =1a(1) =49a(2) =1540a(3) =39711a(4) =916895a(5) =19757815a(6) =406481544a(7) =8093990190a(8) =157366449604

External references