A163536 - OEIS

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A163536

The relative direction (0=straight ahead, 1=turn right, 2=turn left) of the Peano curve A163334 at point n.

6

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, 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, 0, 0, 0, 2, 2, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 2, 2, 0, 0, 0, 0, 2, 2

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,5

COMMENTS

a(9*n) = a(81*n) for all n.

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..59049

FORMULA

a(n) = A163241((A163534(n+1)-A163534(n)) modulo 4).

a(n) = A014681(A163537(n)).

PROG

(Scheme:) (define (A163536 n) (A163241 (modulo (- (A163534 (1+ n)) (A163534 n)) 4)))

CROSSREFS

Cf. A163534 (direction), A163537 (transposed relative).

Sequence in context: A227188 A354107 A037863 * A328828 A276009 A328842

Adjacent sequences: A163533 A163534 A163535 * A163537 A163538 A163539

KEYWORD

nonn

AUTHOR

Antti Karttunen, Aug 01 2009

EXTENSIONS

Name corrected by Kevin Ryde, Aug 29 2020

STATUS

approved