a(n) = Sum_{k=0..n} binomial(k^2, k).

A295773

a(n) = Sum_{k=0..n} binomial(k^2, k).

Terms

    a(0) =1a(1) =2a(2) =8a(3) =92a(4) =1912a(5) =55042a(6) =2002834a(7) =87903418a(8) =4514068786a(9) =265401903136

External references