%I
%S 1,6,420,360360,72201776446800,591133442051411133755680800,
%T 6676878045498705789701874602220118271269436344024536000
%N Least common multiple of (2^n, 2^n + 1, ..., 2^(n+1)  1).
%t Table[LCM@@Table[2^n+i, {i, 0, 2^n1}], {n, 0, 7}] (* _Waldemar Puszkarz_, May 31 2016 *)
%o (Sage) [lcm([2^n+i for i in [0..2^n1]]) for n in [0..10]] # _Tom Edgar_, May 31 2016
%o (PARI) a(n)=lcm([2^n..2^(n+1)1]) \\ _Charles R Greathouse IV_, Jun 08 2016
%K nonn
%O 0,2
%A _Jeffrey Shallit_, May 31 2016
