A000493 - OEIS

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A000493

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

0, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0, 0, -1, -1, -1, 0, 0 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,1`
	LINKS	`Robert Israel, Table of n, a(n) for n = 0..10000`
	FORMULA	`a(n) = -(A032615(n) mod 2). - Robert Israel, Jun 14 2015`
	MAPLE	`f := n->floor(evalf(sin(n)));`
	MATHEMATICA	`f[ n_ ] := Floor[ N[ Sin[ n ] ] ]` `Floor[Sin[Range[0, 90]]] (* Harvey P. Dale, Dec 04 2012 *)`
	PROG	`(Magma) [Floor(Sin(n)): n in [0..100]]; // Vincenzo Librandi, Jun 15 2015`
	CROSSREFS	`Cf. A032615, A126564 (even bisection), A000480 (floor cos(n)).` `Sequence in context: A011661 A011660 A087101 * A011663 A091247 A085137` `Adjacent sequences: A000490 A000491 A000492 * A000494 A000495 A000496`
	KEYWORD	`sign,easy`
	AUTHOR	`N. J. A. Sloane`
	STATUS	`approved`

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Last modified March 28 03:46 EDT 2023. Contains 361577 sequences. (Running on oeis4.)