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A217750 Number of tetragonal regions in the exterior of a regular n-gon with all diagonals drawn. 1

%I #7 Mar 23 2013 15:11:24

%S 0,0,0,0,0,0,18,50,88,156,260,392,555,848,1088

%N Number of tetragonal regions in the exterior of a regular n-gon with all diagonals drawn.

%Y Cf. A067151, A217746.

%K nonn

%O 3,7

%A _Martin Renner_, Mar 23 2013

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Last modified March 29 10:59 EDT 2024. Contains 371277 sequences. (Running on oeis4.)