A126564 - OEIS

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A126564

a(n) = floor( sin(n)*cos(n) ).

0, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, 0, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, -1, -1, 0, 0

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,1

LINKS

Table of n, a(n) for n=0..102.

FORMULA

a(n) = floor(sin(n)*cos(n)).

a(n) = floor(sin(2n)/2). [Wesley Ivan Hurt, Jun 22 2013]

PROG

(PARI) a(n) = floor(sin(n)*cos(n))

CROSSREFS

Cf. A000480, A000493, A126565.