a(n) = A108625(2*n-1, n-1) for n >= 1.

A364243

a(n) = A108625(2*n-1, n-1) for n >= 1.

Terms

    a(0) =1a(1) =13a(2) =271a(3) =6637a(4) =176251a(5) =4914427a(6) =141573251a(7) =4174790893a(8) =125288929171

External references