a(0)=1, a(m+1) = Sum_{k=0..m}[a(k)^2 * a(m-k)^2].
A053294
a(0)=1, a(m+1) = Sum_{k=0..m}[a(k)^2 * a(m-k)^2].
Terms
- a(0) =1a(1) =1a(2) =2a(3) =9a(4) =170a(5) =57978a(6) =6722955416
External references
- oeis: A053294
A053294
a(0)=1, a(m+1) = Sum_{k=0..m}[a(k)^2 * a(m-k)^2].