a(n) = 512*n^10 - 1280*n^8 + 1120*n^6 - 400*n^4 + 50*n^2 - 1.

A243136

a(n) = 512*n^10 - 1280*n^8 + 1120*n^6 - 400*n^4 + 50*n^2 - 1.

Terms

    a(0) =-1a(1) =1a(2) =262087a(3) =22619537a(4) =457470751a(5) =4517251249a(6) =28860511751a(7) =137379191137a(8) =528572943487

External references