a(n) is the concatenation of a(n-1) and a(n-2) with a(1)=1, a(2)=2.
A008351
a(n) is the concatenation of a(n-1) and a(n-2) with a(1)=1, a(2)=2.
Terms
- a(0) =1a(1) =2a(2) =21a(3) =212a(4) =21221a(5) =21221212
External references
- oeis: A008351
A008351
a(n) is the concatenation of a(n-1) and a(n-2) with a(1)=1, a(2)=2.