a(n)=f(a(n-1)+1,a(n-2),a(n-3)), where f(x,y,z)=yz+zx+xy and a(1)=0, a(2)=0, a(3)=1.
A203761
a(n)=f(a(n-1)+1,a(n-2),a(n-3)), where f(x,y,z)=yz+zx+xy and a(1)=0, a(2)=0, a(3)=1.
Terms
- a(0) =0a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =3a(7) =14a(8) =81a(9) =1436a(10) =137649a(11) =208931366
External references
- oeis: A203761