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%I #9 Jun 23 2021 09:43:59
%S 1,4,9,12,14,17,20,22,25,30,33,35,38,41,43,46,48,51,54,56,59,64,67,69,
%T 72,75,77,80,85,88,90,93,98,101,103,106,109,111,114,119,122,124,127,
%U 130,132,135,140,143,145,148,153,156,158,161,164,166,169,174,177,179,182
%N Numbers n such that A140397(n) = 1.
%C Alternatively, those n for which no block of length 3n in the Fibonacci word A003849 forms an abelian cube (that is, a block of the form x x' x'' where x' and x'' are permutations of x). Proved with the Walnut theorem prover. - _Jeffrey Shallit_, Jun 23 2021
%K nonn
%O 1,2
%A _Fred Lunnon_, Jun 20 2008
%E More terms from _Max Alekseyev_, Apr 24 2010