id:A067100 - OEIS Search Results

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Floor[radius of the inscribed-circle of a regular n-gon with unit sides.].

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0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11 (list; graph; listen)

	OFFSET	`3,11`
	FORMULA	`a(n) = floor[{cot(pi/n)/2}]`
	EXAMPLE	`a(24) = floor[ cot(pi/24)/2 ]= floor [3.79787705636257522026320957021073] =3`
	MATHEMATICA	`Table[ Floor[ Cot[Pi/n]/2], {n, 3, 75} ]`
	CROSSREFS	`Cf. A067099, A062299.` `Sequence in context: A052364 A052374 A003074 this_sequence A074802 A071804 A111894` `Adjacent sequences: A067097 A067098 A067099 this_sequence A067101 A067102 A067103`
	KEYWORD	`easy,nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jan 07 2002`
	EXTENSIONS	`More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 09 2002`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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