Truncate Stirling's asymptotic series for 3! after n terms and round to the nearest integer.

Terms

a(0) =6a(1) =6a(2) =6a(3) =6a(4) =6a(5) =6a(6) =6a(7) =6a(8) =6a(9) =6a(10) =6a(11) =6a(12) =6a(13) =6a(14) =6a(15) =6a(16) =6a(17) =6a(18) =6a(19) =6a(20) =6a(21) =6a(22) =6a(23) =6a(24) =6a(25) =6a(26) =6a(27) =6a(28) =6a(29) =6