id:A040399 - OEIS Search Results

Search: id:A040399

Displaying 1-1 of 1 results found.

page 1

Continued fraction for sqrt(420).

+0
1

20, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40, 2, 40 (list; graph; listen)

	OFFSET	`0,1`
	LINKS	`Index entries for continued fractions for constants`
	FORMULA	`a(n)=21+19(-1)^n-20[C(2*n,n) mod 2], with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Apr 30 2009]`
	MAPLE	`with(numtheory): Digits := 300: convert(evalf(sqrt(420)), confrac);`
	CROSSREFS	`Sequence in context: A037926 A040397 A040398 this_sequence A040390 A040391 A118295` `Adjacent sequences: A040396 A040397 A040398 this_sequence A040400 A040401 A040402`
	KEYWORD	`nonn,cofr,easy`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

page 1

Search completed in 0.002 seconds

Last modified December 5 23:38 EST 2009. Contains 170428 sequences.

AT&T Labs Research