Greatest common divisor of product of divisors of n and product of non-divisors < n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =4a(6) =1a(7) =2a(8) =3a(9) =4a(10) =1a(11) =144a(12) =1a(13) =4a(14) =45a(15) =32a(16) =1a(17) =72a(18) =1a(19) =320a(20) =63a(21) =4a(22) =1a(23) =82944a(24) =125a(25) =4a(26) =729a(27) =448a(28) =1a(29) =162000