|
%I #14 Jun 08 2018 21:00:54
%S 1,2,4,8,12,18,22,28,38,50,56,68,84,102,118,142,172,204,228,264,308,
%T 358,412,478,558,654,764,892,1048,1234,1404,1618,1870,2152,2458,2826,
%U 3256,3750,4292,4940,5688,6548,7518,8672,10004,11520,13184,15130,17364,19904
%N Number of length-n binary words containing no instance of the pattern x y y x^R where x and y are nonempty.
%C By an "instance of the pattern x y y x^R" we mean a nonempty block, followed by a second nonempty block (of a possibly different length), followed by the second block again, and ending with the first block reversed. An example in English is the word "redder": (re)(d)(d)(er).
%K nonn
%O 0,2
%A _Jeffrey Shallit_, Jun 08 2018
|
