

A273820


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


0




OFFSET

0,2


LINKS

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


MATHEMATICA

Table[LCM@@Table[2^n+i, {i, 0, 2^n1}], {n, 0, 7}] (* Waldemar Puszkarz, May 31 2016 *)


PROG

(Sage) [lcm([2^n+i for i in [0..2^n1]]) 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



