|
%I #2 Mar 30 2012 18:59:18
%S 1,-2,1,4,-4,1,-16,16,-6,1,80,-80,32,-8,1,-448,448,-184,52,-10,1,2688,
%T -2688,1120,-336,76,-12,1,-16896,16896,-7104,2208,-544,104,-14,1,
%U 109824
%N Riordan array ((3-sqrt(1+8x))/2, (sqrt(1+8x)-1)/4).
%C Inverse of A122438. Row sums are A122441.
%e Triangle begins
%e 1,
%e -2, 1,
%e 4, -4, 1,
%e -16, 16, -6, 1,
%e 80, -80, 32, -8, 1,
%e -448, 448, -184, 52, -10, 1,
%e 2688, -2688, 1120, -336, 76, -12, 1
%K easy,sign,tabl
%O 0,2
%A _Paul Barry_, Sep 05 2006
|
