a(n)=f(a(n-1)+1,a(n-2)+1,a(n-3)), where f(x,y,z)=yz+zx+xy and (a(1),a(2),a(3))=(0,0,1).
A203901
a(n)=f(a(n-1)+1,a(n-2)+1,a(n-3)), where f(x,y,z)=yz+zx+xy and (a(1),a(2),a(3))=(0,0,1).
Terms
- a(0) =0a(1) =0a(2) =1a(3) =2a(4) =6a(5) =31a(6) =302a(7) =11706a(8) =3919531a(9) =47073195302
External references
- oeis: A203901