OFFSET
1,1
LINKS
Robert Israel, Table of n, a(n) for n = 1..3306
FORMULA
a(n) = floor(2^n csc(1/n)).
MAPLE
seq(floor(2^n*csc(1/n)), n=1..100); # Robert Israel, Apr 05 2020
MATHEMATICA
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, Mar 11 2020
STATUS
approved