Smallest number m with property that 2^m-1 is divisible by first n odd primes.

Terms

a(0) =2a(1) =4a(2) =12a(3) =60a(4) =60a(5) =120a(6) =360a(7) =3960a(8) =27720a(9) =27720a(10) =27720a(11) =27720a(12) =27720a(13) =637560a(14) =8288280a(15) =240360120a(16) =240360120a(17) =240360120a(18) =240360120a(19) =240360120a(20) =240360120a(21) =9854764920a(22) =9854764920a(23) =19709529840a(24) =98547649200