Product of nonzero remainders n mod p, over all primes p < n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =2a(7) =6a(8) =8a(9) =3a(10) =8a(11) =10a(12) =36a(13) =24a(14) =8a(15) =30a(16) =288a(17) =420a(18) =1920a(19) =2268a(20) =640a(21) =270a(22) =2880a(23) =9240a(24) =13824a(25) =7560a(26) =19200a(27) =17820a(28) =120960a(29) =64064