A163536 The relative direction (0=straight ahead, 1=turn right, 2=turn left) of the Peano curve A163334 at point n.

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

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