A273820 Least common multiple of (2^n, 2^n + 1, ..., 2^(n+1) - 1).

1, 6, 420, 360360, 72201776446800, 591133442051411133755680800, 6676878045498705789701874602220118271269436344024536000

Offset

0,2

Links

Table of n, a(n) for n=0..6.

Mathematica

Table[LCM@@Table[2^n+i, {i, 0, 2^n-1}], {n, 0, 7}] (* Waldemar Puszkarz, May 31 2016 *)

Prog

(Sage) [lcm([2^n+i for i in [0..2^n-1]]) for n in [0..10]] # Tom Edgar, May 31 2016
(PARI) a(n)=lcm([2^n..2^(n+1)-1]) \\ Charles R Greathouse IV, Jun 08 2016

Crossrefs

Sequence in context: A174773 A229471 A258192 * A162088 A199253 A199198

Adjacent sequences: A273817 A273818 A273819 * A273821 A273822 A273823

Keyword

nonn

Author

Jeffrey Shallit, May 31 2016

Status

approved