%I #16 Dec 27 2021 11:28:15
%S 1,2,-3,4,0,5,0,-6,0,-7,8,0,0,0,9,0,0,10,0,0,-11,0,-12,0,0,0,0,13,0,0,
%T 0,-14,0,0,0,-15,16,0,0,0,0,0,0,0,17,0,0,0,0,18,0,0,0,0,-19,0,0,20,0,
%U 0,0,0,0,0,0,21,0,0,0,0,0,-22,0,0,0,0,0,-23,0,-24,0,0,0,0,0,0,0,0,0,0,25
%N Embed zeros in A119972, thereby creating a signed triangular matrix illustrating the pattern of negative values.
%H Hakan Icoz, <a href="/A119974/b119974.txt">Table of n, a(n) for n = 1..1326</a> (rows 1..51).
%e Triangle begins
%e 1;
%e 2, -3;
%e 4, 0, 5;
%e 0, -6, 0, -7;
%e 8, 0, 0, 0, 9;
%e 0, 0, 10, 0, 0, -11;
%e 0, -12, 0, 0, 0, 0, 13;
%e 0, 0, 0, -14, 0, 0, 0, -15;
%e 16, 0, 0, 0, 0, 0, 0, 0, 17;
%e 0, 0, 0, 0, 18, 0, 0, 0, 0, -19;
%e 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 21;
%e 0, 0, 0, 0, 0, -22, 0, 0, 0, 0, 0, -23;
%e 0, -24, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 25;
%e ...
%Y Cf. A119972.
%K sign,tabl
%O 1,2
%A _Alford Arnold_, Jun 06 2006
%E More terms from _Hakan Icoz_, Dec 25 2021