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%I #6 Dec 25 2023 18:13:52
%S 0,-3,12,-81,558,-4095,31074,-241761,1915998,-15403839,125264226,
%T -1028198769,8505440256,-70821126339,593013903996,-4989710564097,
%U 42162715062462,-357607035133503,3043168538309586,-25973801534610801,222282241838388288,-1906876619917171299,16394307639893817516,-141231930366941378721
%N a(n) = Sum{k=0..n} (-1)^k*A002893(k).
%K sign
%O 0,2
%A _N. J. A. Sloane_, Feb 16 2012
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