%I #4 Nov 16 2012 04:00:11
%S 1,3,9,28,91,308,1079,3888,14332,53810,205075,791250,3084504,12129506,
%T 48056095,191633546,768535768,3097705378,12541851048,50983349848,
%U 208003171266,851412895348,3495527318559,14390543072502,59393240482618
%N Row sums of number triangle A105848.
%C Binomial transform of A105633.
%F G.f.: (1-2x-sqrt((1-6x+8x^2-4x^3)/(1-2x)))/(2x^2).
%F Conjecture: (n+2)*a(n) +2*(-4*n-3)*a(n-1) +4*(5*n-2)*a(n-2) +2*(-10*n+17)*a(n-3) +8*(n-3)*a(n-4)=0. - _R. J. Mathar_, Nov 16 2012
%K easy,nonn
%O 0,2
%A _Paul Barry_, Apr 22 2005