Somos-4 sequence variant: a(n) = (a(n-1)*a(n-3) - a(n-2)^2)/a(n-4), a(0) = 1, a(1) = 1, a(2) = 2, a(3) = -1.
A277279
Somos-4 sequence variant: a(n) = (a(n-1)*a(n-3) - a(n-2)^2)/a(n-4), a(0) = 1, a(1) = 1, a(2) = 2, a(3) = -1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =-1a(4) =-5a(5) =-11a(6) =-7a(7) =86a(8) =199a(9) =799a(10) =-4159a(11) =-17047a(12) =-155366a(13) =445015a(14) =7627979a(15) =81138437a(16) =142104721a(17) =-12357952274a(18) =-134098256401
External references
- oeis: A277279