a(1)=0, a(1)=1, a(n+2)=abs(concatenate(a(n+1)a(n))-concatenate(a(n)a(n+1))).
A070823
a(1)=0, a(1)=1, a(n+2)=abs(concatenate(a(n+1)a(n))-concatenate(a(n)a(n+1))).
Terms
- a(0) =0a(1) =1a(2) =9a(3) =72a(4) =243a(5) =47871a(6) =23523372
External references
- oeis: A070823