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%I #3 Mar 30 2012 18:52:03
%S 1,3,3,3,6,3,3,9,3,3,9,3,6,10,3,3,9,9,3,9,3,3,18,3,6,9,3,9,9,3,3,18,9,
%T 3,9,3,3,18,9,3,15,3,9,9,3,9,9,9,3,18,3,3,27,3,3,9,3,9,18,9,6,9,10,3,
%U 9,3,9,30,3,3,9,9,9,18,3,3,18,9,3,9,9,3,27,3,6,18,3,18,9,3,3,9,9,9,30,3,3,27
%N A158280(n)/7.
%C A kind of core or backbone of A145511, A145501 and A145444.
%K nonn
%O 0,2
%A _Paul Curtz_, Mar 16 2009
%E Edited and extended by _R. J. Mathar_, Apr 04 2009
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