Integer values of n!!/sum(i=0..n,n), with n>=1.

A130332

Integer values of n!!/sum(i=0..n,n), with n>=1.

Terms

    a(0) =1a(1) =1a(2) =21a(3) =1485a(4) =6144a(5) =225225a(6) =17694720a(7) =59520825a(8) =6539968512a(9) =24325703325a(10) =145332633600

External references