id:A134030 - OEIS Search Results

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Areas of regular n-sided polygons with length of each side equal to 1 (rounded).

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	OFFSET	`4,2`
	LINKS	`Wikipedia, Regular polygons`
	FORMULA	`Round( n / 4 tan (180/n) )`
	EXAMPLE	`a(5) = 5 because a(1) is a square and a(5) is a regular octagon with sides equal to 1 which has a rounded area of 5.`
	CROSSREFS	`Sequence in context: A049808 A050418 A011869 this_sequence A100054 A101271 A093110` `Adjacent sequences: A134027 A134028 A134029 this_sequence A134031 A134032 A134033`
	KEYWORD	`easy,nonn`
	AUTHOR	`Ben Thurston (benthurston27(AT)yahoo.com), Jan 11 2008`

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Last modified December 4 21:35 EST 2008. Contains 151309 sequences.