a(n) = Jacobsthal(n^2), where Jacobsthal(n) = A001045(n), for n>=1.

A231279

a(n) = Jacobsthal(n^2), where Jacobsthal(n) = A001045(n), for n>=1.

Terms

    a(0) =1a(1) =5a(2) =171a(3) =21845a(4) =11184811a(5) =22906492245

External references