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A105529 Given a list of ternary numbers, interpret each as a ternary Gray code number, then convert to decimal. 3
0, 1, 2, 4, 5, 3, 8, 6, 7, 13, 14, 12, 17, 15, 16, 9, 10, 11, 26, 24, 25, 18, 19, 20, 22, 23, 21, 40, 41, 39, 44, 42, 43, 36, 37, 38, 53, 51, 52, 45, 46, 47, 49, 50, 48, 27, 28, 29, 31, 32, 30, 35, 33, 34, 80, 78, 79, 72, 73, 74, 76, 77, 75 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Ternary numbers are converted into ternary Gray code by using the following algorithm: Leftmost term is leftmost Gray code term. Then going to the right, if next term b is greater than current term a, then (b - a) is the next Gray code term. (Gray code terms do not enter into the algorithmic operation). If next term b < a, then add 3 to b and perform [(3+b) - a] which becomes the next Gray code term. If b = a, the Gray code term = 0.

Interpreting any N-Ary code for n as N-Ary Gray code or vice versa results in a permutation of the natural numbers. Any N-Ary term can be converted to the N-Ary Gray code by using a generalization of the algorithmic rules such that if b < a, then add N to b and perform [(N + b) - a]. The other rules remain the same. A105530: ternary Gray code interpreted as ternary.

LINKS

Table of n, a(n) for n=0..62.

EXAMPLE

a(9) = 13 since Ternary 100 (9 decimal) interpreted as Ternary Gray code = 13.

CROSSREFS

Cf. A105530, A003188.

Sequence in context: A099520 A159958 A071770 * A120237 A026182 A026198

Adjacent sequences:  A105526 A105527 A105528 * A105530 A105531 A105532

KEYWORD

nonn,easy

AUTHOR

Gary W. Adamson, Apr 11 2005

EXTENSIONS

More terms from Sean A. Irvine, Feb 09 2012

STATUS

approved

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Last modified July 21 19:13 EDT 2019. Contains 325199 sequences. (Running on oeis4.)