Search: id:A052174
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%I A052174
%S A052174 1,1,1,3,2,1,6,8,3,1,20,20,15,4,1,50,75,45,24,5,1,175,210,189,84,35,
%T A052174 6,1,490,784,588,392,140,48,7,1,1764,2352,2352,1344,720,216,63,8,1,
%U A052174 5292,8820,7560,5760,2700,1215,315,80,9,1
%N A052174 Triangle of numbers arising in enumeration of walks on square lattice.
%H A052174 R. K. Guy, Catwalks, Sandsteps and Pascal Pyramids, <a href="http://www.cs.uwaterloo.ca/
               journals/JIS/index.html">J. Integer Seqs., Vol. 3 (2000), #00.1.6</
               a>
%e A052174 1; 1 1; 3 2 1; 6 8 3 1; 20 20 15 4 1; 50 75 45 24 5 1; 175 210 189 84 
               35 6 1; ...
%Y A052174 Sequence in context: A139624 A132276 A114586 this_sequence A111049 A088617 
               A144250
%Y A052174 Adjacent sequences: A052171 A052172 A052173 this_sequence A052175 A052176 
               A052177
%K A052174 nonn,tabl,easy,nice
%O A052174 0,4
%A A052174 N. J. A. Sloane (njas(AT)research.att.com), Jan 26 2000

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