A118142 - OEIS

%I #4 Aug 08 2015 23:57:24

%S 4,5,9,11,16,19,23,29,30,32,33,39,47,59,61,62,64,65,67,79,84,95,101,

%T 119,123,125,126,128,129,131,135,154,159,164,169,170,185,191,203,204,

%U 239,247,251,253,254,256,257,259

%N Numbers n such that a perfect n X n parity pattern exists.

%C See A118141 for definitions and references.

%Y A subsequence of A117870.

%K nonn

%O 1,1

%A _Don Knuth_, May 11 2006