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A100833 Smallest positive palindrome-free and square-free sequence. +0
1
1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 5, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 6, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 5, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 7, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 5, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 6, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 5, 1, 2, 3, 1, 2, 4, 1, 2, 3, 1, 2, 8, 1, 2, 3, 1, 2, 4, 1, 2, 3 (list; graph; listen)
OFFSET

1,2

COMMENT

a(1)=1 and, for n>1, a(n) is the smallest positive integer such that no subsequence of two or more consecutive terms is a palindrome and no subsequence of 2k consecutive terms, k>=1, consists of two copies of the same subsequence.

CROSSREFS

Sequence in context: A081514 A109206 A088422 this_sequence A097293 A026793 A072193

Adjacent sequences: A100830 A100831 A100832 this_sequence A100834 A100835 A100836

KEYWORD

nonn

AUTHOR

John W. Layman (layman(AT)math.vt.edu), Jan 07 2005

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.


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