a(1) = 1; a(n) = (7*n-9)*a(n-1) for n > 1.
A147585
a(1) = 1; a(n) = (7*n-9)*a(n-1) for n > 1.
Terms
- a(0) =1a(1) =5a(2) =60a(3) =1140a(4) =29640a(5) =978120a(6) =39124800a(7) =1838865600a(8) =99298742400
External references
- oeis: A147585
A147585
a(1) = 1; a(n) = (7*n-9)*a(n-1) for n > 1.