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The relative direction (0=straight ahead, 1=turn right, 2=turn left) taken by the type I Hilbert's Hamiltonian walk A163357 at the step n.

+0
7

1, 1, 2, 0, 2, 2, 1, 1, 2, 2, 0, 2, 1, 1, 0, 1, 2, 2, 1, 0, 1, 1, 2, 2, 1, 1, 0, 1, 2, 2, 0, 0, 2, 2, 1, 0, 1, 1, 2, 2, 1, 1, 0, 1, 2, 2, 1, 0, 1, 1, 2, 0, 2, 2, 1, 1, 2, 2, 0, 2, 1, 1, 2, 0, 2, 2, 1, 0, 1, 1, 2, 2, 1, 1, 0, 1, 2, 2, 0, 2, 1, 1, 2, 0, 2, 2, 1, 1, 2, 2, 0, 2, 1, 1, 0, 0, 1, 1, 2, 0, 2, 2 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`a(16n) = a(256n) for all n.`
	LINKS	`A. Karttunen, Table of n, a(n) for n = 1..65536`
	FORMULA	`a(n) = A163241((A163540(n+1)-A163540(n)) modulo 4).`
	PROGRAM	`(Scheme:) (define (A163542 n) (A163241 (modulo (- (A163540 (1+ n)) (A163540 n)) 4)))`
	CROSSREFS	`a(n) = A014681(A163543(n)). See also A163540.` `Sequence in context: A143751 A158950 A059581 this_sequence A061895 A129678 A023604` `Adjacent sequences: A163539 A163540 A163541 this_sequence A163543 A163544 A163545`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Aug 01 2009`

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Last modified December 15 00:47 EST 2009. Contains 170825 sequences.

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