a(n) = -Product_{k=0..n} (8*k-1); octo-factorial numbers.
A049210
a(n) = -Product_{k=0..n} (8*k-1); octo-factorial numbers.
Terms
- a(0) =1a(1) =7a(2) =105a(3) =2415a(4) =74865a(5) =2919735a(6) =137227545a(7) =7547514975a(8) =475493443425
External references
- oeis: A049210