0,1

a(n) in {1,3,5,7} for all n. a(4k+i) = i if i is odd.

There is a typo in Grytczuk's definition: he has "+ 5" instead of "+ 4".

Table of n, a(n) for n=0..100.

A. Carpi, Multidimensional unrepetitive configurations, Theoret. Comput. Sci., 56 (1988), 233-241.

Jaroslaw Grytczuk, Thue type problems for graphs, points and numbers, Discrete Math., 308 (2008), 4419-4429. [See Problem 15.]

Sequence in context: A217774 A060186 A240995 * A322602 A228639 A073226

Adjacent sequences: A121999 A122000 A122001 * A122003 A122004 A122005

nonn

N. J. A. Sloane, Aug 05 2008

Terms from a(26) on from John W. Layman, Aug 27 2008

approved