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 A126564 Floor( sin(n)*cos(n) ). 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, -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 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. Sequence in context: A181712 A288729 A286807 * A180433 A165560 A014306 Adjacent sequences:  A126561 A126562 A126563 * A126565 A126566 A126567 KEYWORD sign AUTHOR Rick L. Shepherd, Dec 27 2006 STATUS approved

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Last modified August 8 19:29 EDT 2020. Contains 336298 sequences. (Running on oeis4.)