A052385 - OEIS

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A052385

The best integers n to use in the expansion Pi=3+sum((-1)^k/(10^k*n), k=0..infinity).

7, 79, 7498, 5830114, 8652011824287 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,1`
	FORMULA	`Un=Pi-3-sum((-1)^k/10^k/Ak, k=0..n-1)-(-1)^n/10^n/a, An=argmin(Un), with a integer and Un*(-1)^n<0`
	CROSSREFS	`Cf. A014013.` `Sequence in context: A159524 A113034 A201704 * A093947 A115986 A085606` `Adjacent sequences: A052382 A052383 A052384 * A052386 A052387 A052388`
	KEYWORD	`easy,frac,more,nonn`
	AUTHOR	`Boris Gourevitch (sai1042(AT)ensai.fr), Mar 10 2000`

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Last modified February 15 21:03 EST 2012. Contains 205852 sequences.