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A067100
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Floor[radius of the inscribed-circle of a regular n-gon with unit sides.].
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6
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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; refs; listen; history; internal format)
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OFFSET
| 3,11
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LINKS
| Harry J. Smith, Table of n, a(n) for n=3,...,1000
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FORMULA
| a(n) = floor[{cot(pi/n)/2}]
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EXAMPLE
| a(24) = floor[ cot(pi/24)/2 ]= floor [3.79787705636257522026320957021073] =3
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MATHEMATICA
| Table[ Floor[ Cot[Pi/n]/2], {n, 3, 75} ]
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PROG
| (PARI) { for (n=3, 1000, write("b067100.txt", n, " ", floor((cotan(Pi/n)/2))) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), May 19 2010]
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CROSSREFS
| Cf. A067099, A062299.
Sequence in context: A052364 A052374 A003074 * A074802 A071804 A111894
Adjacent sequences: A067097 A067098 A067099 * A067101 A067102 A067103
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KEYWORD
| easy,nonn
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jan 07 2002
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EXTENSIONS
| More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), Jan 09 2002
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