1,4

Table of n, a(n) for n=1..80.

Floor[Tan[Pi/2 (1-1/Range[80])]] (* Harvey P. Dale, Jul 25 2013 *)

(PARI) a(n) = floor(tan((1 - 1/n)*Pi/2)) \\ Michel Marcus, Mar 23 2013

Sequence in context: A136409 A039729 A074065 * A284006 A131138 A284724

Adjacent sequences: A024808 A024809 A024810 * A024812 A024813 A024814

nonn

Clark Kimberling

approved