A022156 - OEIS

%I #9 Sep 30 2017 02:35:05

%S 3,3,9,11,1,3,33,43,1,3,1,11,1,3,129,171,1,3,1,11,1,3,1,43,1,3,1,11,1,

%T 3,513,683,1,3,1,11,1,3,1,43,1,3,1,11,1,3,1,171,1,3,1,11,1,3,1,43,1,3,

%U 1,11,1,3,2049,2731,1,3,1,11,1,3,1,43,1,3,1,11,1,3,1,171,1,3,1,11,1,3,1,43,1

%N Difference sequence of A020991.

%H J. Brillhart and P. Morton, <a href="http://www.maa.org/programs/maa-awards/writing-awards/a-case-study-in-mathematical-research-the-golay-rudin-shapiro-sequence">A case study in mathematical research: the Golay-Rudin-Shapiro sequence</a>, Amer. Math. Monthly, 103 (1996) 854-869.

%Y Cf. A020986, A020991.

%K nonn

%O 0,1

%A _Robert G. Wilson v_