A133999 - OEIS

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A133999

a(1) = a(2) = 1; a(n+1) = round( a(n) + sqrt(3)*a(n-1)).

1, 1, 3, 5, 10, 19, 36, 69, 131, 251, 478 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,3`
	EXAMPLE	`a(7) = 36 because a(6) is 19 and sqrt(3)*a(5) = 17.32, round(19+17.32) = 36`
	CROSSREFS	`Sequence in context: A018168 A084321 A158943 * A014610 A117591 A003055` `Adjacent sequences: A133996 A133997 A133998 * A134000 A134001 A134002`
	KEYWORD	`easy,nonn`
	AUTHOR	`Ben Thurston (benthurston27(AT)yahoo.com), Jan 09 2008`

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Last modified February 17 17:51 EST 2012. Contains 206061 sequences.