id:A140272 - OEIS Search Results

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Decimal expansion of arctan(3*sqrt(15)/29).

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

	OFFSET	`0,1`
	COMMENT	`The Brocard angle in radians of the obtuse scalene triangle with sides of lengths 2, 3 and 4, the scalene triangle with least integer side lengths. See formulas in the Weisstein link.`
	LINKS	`Eric Weisstein's World of Mathematics, Brocard Angle.`
	FORMULA	`arctan(3sqrt(15)/29) = arctan(4A140239/29) = arcsin(3sqrt(915)/244) = arccos(29sqrt(61)/244).`
	EXAMPLE	`0.38106956877756026908149342379874213938224647938776469222831569013225470496...`
	PROGRAM	`(PARI) atan(3*sqrt(15)/29)`
	CROSSREFS	`Cf. A140273, A140239.` `Sequence in context: A085995 A076482 A156827 this_sequence A021728 A084185 A073227` `Adjacent sequences: A140269 A140270 A140271 this_sequence A140273 A140274 A140275`
	KEYWORD	`cons,nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 16 2008, Jul 18 2008`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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