a(n) = Product_{k in M_n} k, M_n = {k | 1 <= k <= 3n and k mod 3 = n mod 3}.
A190903
a(n) = Product_{k in M_n} k, M_n = {k | 1 <= k <= 3n and k mod 3 = n mod 3}.
Terms
- a(0) =1a(1) =1a(2) =10a(3) =162a(4) =280a(5) =12320a(6) =524880a(7) =1106560a(8) =96342400a(9) =7142567040a(10) =17041024000
External references
- oeis: A190903