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A217752
Number of hexagonal regions in the exterior of a regular n-gon with all diagonals drawn.
1
0, 0, 0, 0, 0, 0, 0, 0, 11, 0, 39, 14, 75, 112, 221
OFFSET
3,9
CROSSREFS
Sequence in context: A087558 A087555 A185682 * A335646 A261173 A287468
KEYWORD
nonn
AUTHOR
Martin Renner, Mar 23 2013
STATUS
approved