Quintuple factorial numbers: a(n) = Product_{k=0..n-1} (5*k + 2).
A047055
Quintuple factorial numbers: a(n) = Product_{k=0..n-1} (5*k + 2).
Terms
- a(0) =1a(1) =2a(2) =14a(3) =168a(4) =2856a(5) =62832a(6) =1696464a(7) =54286848a(8) =2008613376a(9) =84361761792
External references
- oeis: A047055