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%I #9 May 20 2014 14:52:32
%S 1,1,3,1,1,-5,-7,-5,1,1,7,5,3,5,7,1,1,3,1,-9,-15,-9,1,3,1,1,-33,-35,
%T -5,29,43,29,-5,-35,-33,1,1,91,89,31,-23,-49,-55,-49,-23,31,89,91,1,1,
%U -137,-139,-93,-43,19,85,115,85,19,-43,-93,-139,-137,1,1,51,49,135,225,183,1,-201,-287,-201,1,183,225,135,49,51,1,1,399
%N Triangle read by rows: T(r,c)=T(r,c-1)+T(r,c+1)+T(r-1,c-1).
%C All edge elements are 1 and the triangle is symmetric about the central line. For all elements x inside the triangle
%C ..a..
%C .bxc.
%C we have x=a+b+c. The triangle is symmetric. The top of the triangle thus is
%C ........1
%C .....1..3..1
%C ..1.-5.-7.-5..1
%C 1..7..5..3..5..7..1
%H R. J. Mathar, <a href="/A129392/a129392.pdf">Comments on A129392, A129394 and A129396</a>
%Y Cf. A129393, A129394, A129396, A129398.
%K sign,tabf
%O 0,3
%A _Jonas Wallgren_, Apr 13 2007
%E More terms from _R. J. Mathar_, Jan 17 2008
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