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A220449(n) mod 7.
2

%I #6 May 23 2014 11:17:49

%S 1,1,4,3,1,5,2,5,5,6,1,5,4,3,4,4,2,5,4,6,1,6,6,3,4,6,2,5,2,2,1,6,2,3,

%T 4,3,3,5,2,3,1,6,1,1,4,3,1,5,2,5,5,6,1,5,4,3,4,4,2,5,4,6,1,6,6,3,4,6,

%U 2,5,2,2,1,6,2,3,4,3,3,5,2,3,1,6,1,1,4,3,1,5

%N A220449(n) mod 7.

%H V. H. Moll, <a href="http://www.tulane.edu/~vhm/papers_html/xn-final.pdf">An arithmetic conjecture on a sequence of arctangent sums</a>, 2012.

%Y Cf. A220449, A220450, A220451.

%K nonn

%O 1,3

%A _N. J. A. Sloane_, Dec 22 2012