id:A110935 - OEIS Search Results

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a(n) = if n mod 2 = 0 then 8*F(n)-n otherwise 8*F(n)-4, where F() = Fibonacci numbers A000045.

+0
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0, 4, 6, 12, 20, 36, 58, 100, 160, 268, 430, 708, 1140, 1860, 3002, 4876, 7880, 12772, 20654, 33444, 54100, 87564, 141666, 229252, 370920, 600196, 971118, 1571340, 2542460, 4113828, 6656290, 10770148, 17426440, 28196620, 45623062, 73819716, 119442780, 193262532 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Number of self-avoiding walks on the strip {0,1} X Z.`
	REFERENCES	`A. T. Benjamin, Self-avoiding walks and Fibonacci numbers, Fib. Quart., 44 (No. 4, 2006), 330-334.`
	CROSSREFS	`Sequence in context: A057339 A019445 A119638 this_sequence A128034 A027150 A020141` `Adjacent sequences: A110932 A110933 A110934 this_sequence A110936 A110937 A110938`
	KEYWORD	`nonn`
	AUTHOR	`njas, Sep 30 2007`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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