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A217750 Number of tetragonal regions in the exterior of a regular n-gon with all diagonals drawn. 1
0, 0, 0, 0, 0, 0, 18, 50, 88, 156, 260, 392, 555, 848, 1088 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,7

LINKS

Table of n, a(n) for n=3..17.

CROSSREFS

Cf. A067151, A217746.

Sequence in context: A102835 A095990 A102836 * A180292 A143928 A074173

Adjacent sequences:  A217747 A217748 A217749 * A217751 A217752 A217753

KEYWORD

nonn

AUTHOR

Martin Renner, Mar 23 2013

STATUS

approved

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Last modified January 25 01:46 EST 2020. Contains 331229 sequences. (Running on oeis4.)