a(n) = a(n-1) + a(n-2) if n == 3 mod 4; a(n) = a(n-1) - a(n-2) if n == 0 mod 4; a(n) = a(n-1)*a(n-2) if n == 1 mod 4; and a(n) = a(n-1)/a(n-2) if n == 2 mod 4; with a(1)=a(2)=1.
A131183
a(n) = a(n-1) + a(n-2) if n == 3 mod 4; a(n) = a(n-1) - a(n-2) if n == 0 mod 4; a(n) = a(n-1)*a(n-2) if n == 1 mod 4; and a(n) = a(n-1)/a(n-2) if n == 2 mod 4; with a(1)=a(2)=1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =2a(6) =4a(7) =2a(8) =8a(9) =4a(10) =12a(11) =8a(12) =96a(13) =12a(14) =108a(15) =96a(16) =10368a(17) =108a(18) =10476a(19) =10368a(20) =108615168a(21) =10476a(22) =108625644a(23) =108615168a(25) =108625644
External references
- oeis: A131183