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%I #3 Mar 30 2012 18:52:03
%S 0,2,12,3,120,5,252,7,240,9,660,11,32760,13,84,15,8160,17,14364,19,
%T 6600,21,3036,23,65520,25,156,27,24360,29,429660,31,16320,33,204,35,
%U 69090840,37,228,39,541200,41,75852,43,30360,45,12972,47,2227680,49,3300,51,82680
%N n*A027642(n).
%F a(n) = A164558(n) - A164555(n).
%F a(n) = A027642(n) * A001477(n).
%Y Cf. A164877 (bisection).
%K nonn
%O 0,2
%A _Paul Curtz_, Aug 29 2009
%E Extended by _R. J. Mathar_, Sep 03 2009
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