Characteristic function of multiples of three.
1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1
2 seqfan posts
Thu Mar 4 15:55:07 CET 2010 [seqfan] Re: periodicity of expansion of 3/2 in phi-phase A173857