a(0) = 1; a(n) = Sum_{k=1..n} (-1)^(k+1) * binomial(n,k)^2 * binomial(2*k,k) * a(n-k).
A336271
a(0) = 1; a(n) = Sum_{k=1..n} (-1)^(k+1) * binomial(n,k)^2 * binomial(2*k,k) * a(n-k).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =92a(4) =1354a(5) =29252a(6) =873964a(7) =34555880a(8) =1748176714a(9) =110183215988
External references
- oeis: A336271