%I A103995
%S A103995 1,1,0,1,1,6,35,181,6056,3741,5880885,149991434,32148902071,
%T A103995 4867910308359,891980177502800,740991835820243639,53134975005564905081,
%U A103995 626000780698404972023994
%V A103995 1,-1,0,1,-1,-6,35,181,-6056,-3741,5880885,-149991434,-32148902071,4867910308359,
%W A103995 891980177502800,-740991835820243639,-53134975005564905081,626000780698404972023994
%N A103995 First column of triangle A103910.
%C A103995 The sign of a(n) appears to follow a 7-periodic pattern.
%F A103995 Recurrence: a(n) = -Sum[i=1..n-1, a(i)*A010048(n-1, i-1) ] (conjectured).
%Y A103995 Sequence in context: A026997 A014337 A002041 this_sequence A009572 A027202 
               A026934
%Y A103995 Adjacent sequences: A103992 A103993 A103994 this_sequence A103996 A103997 
               A103998
%K A103995 sign
%O A103995 1,6
%A A103995 Ralf Stephan, Feb 24 2005