a(n) = Product_{p in P_n} where P_n = {p prime, n/2 < p <= n }.

Terms

a(0) =1a(1) =1a(2) =2a(3) =6a(4) =3a(5) =15a(6) =5a(7) =35a(8) =35a(9) =35a(10) =7a(11) =77a(12) =77a(13) =1001a(14) =143a(15) =143a(16) =143a(17) =2431a(18) =2431a(19) =46189a(20) =46189a(21) =46189a(22) =4199a(23) =96577a(24) =96577a(25) =96577a(26) =7429a(27) =7429a(28) =7429a(29) =215441