a(n) = a(n-1) * (a(n-1) + a(n-2)) / a(n-4) with a(1) = a(2) = a(3) = a(4) = 1.

A245283

a(n) = a(n-1) * (a(n-1) + a(n-2)) / a(n-4) with a(1) = a(2) = a(3) = a(4) = 1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =6a(6) =48a(7) =2592a(8) =3421440

External references