a(n)=f(a(n-1),a(n-2),a(n-3)+1), where f(x,y,z)=yz+zx+xy and (a(1),a(2),a(3))=(0,0,1).
A203768
a(n)=f(a(n-1),a(n-2),a(n-3)+1), 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) =1a(4) =3a(5) =11a(6) =61a(7) =959a(8) =70739a(9) =72283977
External references
- oeis: A203768