id:A093652 - OEIS Search Results

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This divided by the corresponding entry from sequence A082630 gives the ohm value of a ladder of unit resistors measured from opposite corners. The ladder is best described as a line of n squares, where every segment has a resistance of 1 ohm.

+0
1

1, 2, 7, 15, 45, 86, 239, 433, 1157, 2034, 5307, 9151, 23497, 39974, 101467, 170913, 430089, 718946, 1796975, 2985775, 7422437, 12272502, 30373191, 50016721, 123327373, 202395986, 497484067, 814061151, 1995542913, 3257222726 (list; graph; listen)

	OFFSET	`1,2`
	LINKS	`Harri Aaltonen (harri.aaltonen(AT)vak.fi), Apr 18 2008, Table of n, a(n) for n = 1..50`
	FORMULA	`If g(n) = A082630(n), then f(n)=(ng(n)-g(n-2))/2. Also 1/(n-2f(n)/g(n)) appraoches 2+sqrt(3) as n increases.`
	CROSSREFS	`Cf. A082630.` `Sequence in context: A052130 A065506 A121165 this_sequence A096690 A050612 A120110` `Adjacent sequences: A093649 A093650 A093651 this_sequence A093653 A093654 A093655`
	KEYWORD	`nonn`
	AUTHOR	`Harri Aaltonen (harri.aaltonen(AT)mail.vak.fi), May 15 2004, Apr 12 2008`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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