Search: id:A114119
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%I A114119
%S A114119 1,3,5,6,8,9,11,12,14,15,17,18,20,21,23,24,26,27,29,30,32,33,35,36,38,
%T A114119 39,41,42,44,45,47,48,50,51,53,54,56,57,59,60,62,63,65,66,68,69,71,72,
%U A114119 74,75,77,78,80,81,83,84,86,87,89,90,92,93,95,96,98,99,101,102,104,105
%N A114119 Row sums of triangle A114118.
%C A114119 Taken modulo 3 yields 1,0,2,0,2,0,2,0,2,..... a(n) is congruent to 0 
               or 2 mod 3 for n>0.
%F A114119 a(n)=3*floor((n+1)/2)+2*mod(n+1, 2)-0^n; a(n)=sum{k=0..n, sum{j=0..n, 
               C(floor((n+k+j)/3), k)C(k, floor((n+k+j)/3))}}.
%Y A114119 Cf. A007494, A049636, A045506.
%Y A114119 Sequence in context: A095117 A089585 A121506 this_sequence A101358 A047446 
               A058065
%Y A114119 Adjacent sequences: A114116 A114117 A114118 this_sequence A114120 A114121 
               A114122
%K A114119 easy,nonn
%O A114119 0,2
%A A114119 Paul Barry (pbarry(AT)wit.ie), Nov 13 2005

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