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Embed zeros in A119972, thereby creating a signed triangular matrix illustrating the pattern of negative values.
2

%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