Triple factorial numbers: (3n)!!! = 3^n*n!.

A032031

Triple factorial numbers: (3n)!!! = 3^n*n!.

Terms

a(0) =

a(1) =

a(2) =

a(3) =

a(4) =

a(5) =

a(6) =

a(7) =

a(8) =

a(9) =

a(10) =

External references

oeis: A032031