A163537 - OEIS

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A163537

The relative direction (0=straight ahead, 1=turn right, 2=turn left) taken by the type II Hilbert's Hamiltonian walk A163336 at the step n.

0, 2, 2, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 2, 2, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 2, 2, 0, 0, 0, 0, 2, 2, 0, 1, 1, 0, 0, 0, 0, 1, 1 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`a(9n) = a(81n) for all n.`
	LINKS	`A. Karttunen, Table of n, a(n) for n = 1..6561`
	FORMULA	`a(n) = A163241((A163535(n+1)-A163535(n)) modulo 4).`
	PROG	`(Scheme:) (define (A163537 n) (A163241 (modulo (- (A163535 (1+ n)) (A163535 n)) 4)))`
	CROSSREFS	`a(n) = A014681(A163536(n)). See also A163535.` `Sequence in context: A049825 A039651 A038190 * A117449 A004594 A124210` `Adjacent sequences: A163534 A163535 A163536 * A163538 A163539 A163540`
	KEYWORD	`nonn`
	AUTHOR	`Antti Karttunen (His-Firstname.His-Surname(AT)gmail.com), Aug 01 2009`

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Last modified February 17 21:13 EST 2012. Contains 206085 sequences.