A040381 - OEIS

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A040381

Continued fraction for sqrt(402).

20, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40, 20, 40 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	LINKS	`Index entries for continued fractions for constants`
	FORMULA	`a(n)=30+10(-1)^n-20[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Apr 29 2009]`
	MAPLE	`with(numtheory): Digits := 300: convert(evalf(sqrt(402)), confrac);`
	CROSSREFS	`Sequence in context: A087708 A081245 A010859 * A022354 A165841 A091235` `Adjacent sequences: A040378 A040379 A040380 * A040382 A040383 A040384`
	KEYWORD	`nonn,cofr,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.