The multinomial transform of A001818(n) = ((2*n-1)!!)^2.

A274760

The multinomial transform of A001818(n) = ((2*n-1)!!)^2.

Terms

    a(0) =1a(1) =1a(2) =10a(3) =478a(4) =68248a(5) =21809656a(6) =13107532816

External references