%I A049863
%S A049863 0,3,4,7,11,21,39,74,138,258,481,898,1676,3129,5841,10904,20355,37998,
%T A049863 70933,132415,247187,461439,861396,1608020,3001788,5603619,10460614,
%U A049863 19527460,36453089,68049183,127031520,237137411,442678728
%N A049863 a(n)=Sum{a(k): k=0,1,2,...,n-4,n-2,n-1}; a(n-3) is not a summand; 3 initial 
               terms required.
%F A049863 a(n)=2*a(n-1)-a(n-3)+a(n-4); 4 initial terms required.
%Y A049863 Sequence in context: A042593 A041018 A072255 this_sequence A025068 A049928 
               A002364
%Y A049863 Adjacent sequences: A049860 A049861 A049862 this_sequence A049864 A049865 
               A049866
%K A049863 nonn
%O A049863 0,2
%A A049863 Clark Kimberling (ck6(AT)evansville.edu)