a(n+1) = a(n)^2 - n^2, a(1) = 0.A143779a(n+1) = a(n)^2 - n^2, a(1) = 0.Terms a(0) =0a(1) =-1a(2) =-3a(3) =0a(4) =-16a(5) =231a(6) =53325a(7) =2843555576External referencesoeis: A143779