Quadruple factorial numbers: Product_{k=0..n-1} (4*k + 3).
A008545
Quadruple factorial numbers: Product_{k=0..n-1} (4*k + 3).
Terms
- a(0) =1a(1) =3a(2) =21a(3) =231a(4) =3465a(5) =65835a(6) =1514205a(7) =40883535a(8) =1267389585a(9) =44358635475
External references
- oeis: A008545