A280048 The Tower of Hanoi word, with a,b,c,a-bar,b-bar,c-bar encoded as 1,2,3,-1,-2,-3 respectively.

1, -3, 2, 1, 3, -2, 1, -3, 2, -1, 3, 2, 1, -3, 2, 1, 3, -2, 1, 3, 2, -1, 3, -2, 1, -3, 2, 1, 3, -2, 1, -3, 2, -1, 3, 2, 1, -3, 2, -1, 3, -2, 1, 3, 2, -1, 3, 2, 1, -3, 2, 1, 3, -2, 1, -3, 2, -1, 3, 2, 1, -3, 2, 1, 3, -2, 1, 3, 2, -1, 3, -2, 1, -3, 2, 1, 3, -2

Offset

0,2

Comments

Writing A,B,C for a-bar,b-bar,c-bar, respectively, the word is aCbacBaCbAcbaCbacBacbAcBaCbacBaCbAcbaCbAcBacbAcbaCbacBaCbAcbaCbacBacbAcBaCbacB...

Links

Lars Blomberg, Table of n, a(n) for n = 0..10000

J. Berstel et al., Combinatorics on Words: Christoffel Words and Repetitions in Words, AMS, 2009; see Definition 2.29, page 92.

Crossrefs

Sequence in context: A287556 A353748 A236966 * A119910 A130784 A138034

Adjacent sequences: A280045 A280046 A280047 * A280049 A280050 A280051

Keyword

sign

Author

N. J. A. Sloane, Dec 31 2016

Extensions

More terms from Lars Blomberg, Jan 09 2017

Status

approved