Search: id:A007780
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%I A007780
%S A007780 1,2,3,6,9,11,18,20,27,30,54,81,162,168,243,486,729,1458,2187,4374,6561,
%T A007780 13122,19683,39366,59049
%N A007780 Losing initial configurations in 2-hole Tchuka Ruma.
%C A007780 The 2-hole Tchuka Ruma game cannot be won for the initial seeds 3^i (i>
               =1) or 2*3^i (i>=0). Though a sufficient condition, this is not necessary, 
               as can be seen from the terms a(6)=11, a(8)=20, a(10)=30 and a(14)=168 
               - Pab Ter (pabrlos2(AT)yahoo.com), Nov 08 2005
%D A007780 Campbell, Paul J. and Darrah P. Chavey, Tchuka Ruma Solitaire, J. Undergrad. 
               Math. Applic., 16 (4) (1995) 343-365.
%H A007780 Campbell, Paul J. and Darrah P. Chavey, <a href="http://cs.beloit.edu/
               campbell/tchuka.pdf">Tchuka Ruma Solitaire</a>, The UMAP Journal 
               16(4) (1995), 343-365.
%Y A007780 Sequence in context: A097384 A067886 A057127 this_sequence A018537 A018331 
               A032704
%Y A007780 Adjacent sequences: A007777 A007778 A007779 this_sequence A007781 A007782 
               A007783
%K A007780 nonn,more
%O A007780 1,2
%A A007780 chavey(AT)beloit.edu (Darrah Chavey)
%E A007780 More terms from Pab Ter (pabrlos2(AT)yahoo.com), Nov 08 2005

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