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%I #19 Oct 30 2022 10:05:24
%S 1,2,2,3,6,4,5,12,16,8,9,24,40,40,16,18,50,92,120,96,32,39,110,212,
%T 312,336,224,64,90,254,500,784,976,896,512,128
%N Riordan array ((1+x-sqrt(1-2x-3x^2))/(2x(1-x)),(1+x-sqrt(1-2x-3x^2))).
%H Vladimir Kruchinin and D. V. Kruchinin, <a href="http://arxiv.org/abs/1103.2582">Composita and their properties</a>, arXiv:1103.2582 [math.CO], 2011-2013.
%F Riordan array ((1+x-sqrt(1-2x-3x^2))/(2x(1-x)),(1+x-sqrt(1-2x-3x^2))).
%e [1]
%e [2,2]
%e [3,6,4]
%e [5,12,16,8]
%e [9,24,40,40,16]
%e [18,50,92,120,96,32]
%e [39,110,212,312,336,224,64]
%e [90,254,500,784,976,896,512,128]
%K nonn,tabl
%O 0,2
%A _Vladimir Kruchinin_, Feb 05 2011