cp's OEIS Frontend

A020659 Lexicographically earliest increasing sequence of nonnegative numbers that contains no arithmetic progression of length 8.

%I A020659 #13 Jan 09 2016 12:01:41
%S A020659 0,1,2,3,4,5,6,8,9,10,11,12,13,15,16,17,18,19,20,22,23,24,25,26,27,29,
%T A020659 30,31,32,33,34,36,37,38,39,40,41,43,44,45,46,47,48,49,58,59,60,61,62,
%U A020659 63,64,66,68,69,70,71,73,74,75,76,77,78,80,83,84,86,87,88,90,91,92,94,95,96,99
%N A020659 Lexicographically earliest increasing sequence of nonnegative numbers that contains no arithmetic progression of length 8.
%H A020659 David W. Wilson, <a href="/A020659/b020659.txt">Table of n, a(n) for n = 1..10000</a>
%Y A020659 Summary of increasing sequences avoiding arithmetic progressions of specified lengths (the second of each pair is obtained by adding 1 to the first):
%Y A020659 3-term AP: A005836 (>=0), A003278 (>0);
%Y A020659 4-term AP: A005839 (>=0), A005837 (>0);
%Y A020659 5-term AP: A020654 (>=0), A020655 (>0);
%Y A020659 6-term AP: A020656 (>=0), A005838 (>0);
%Y A020659 7-term AP: A020657 (>=0), A020658 (>0);
%Y A020659 8-term AP: A020659 (>=0), A020660 (>0);
%Y A020659 9-term AP: A020661 (>=0), A020662 (>0);
%Y A020659 10-term AP: A020663 (>=0), A020664 (>0).
%K A020659 nonn
%O A020659 1,3
%A A020659 _David W. Wilson_