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A002816
Number of polygons that can be formed from n points on a circle, no two adjacent.
(Formerly M3102 N1257)
+0
6
1, 0, 0, 0, 1, 3, 23, 177, 1553, 14963, 157931, 1814453, 22566237, 302267423, 4340478951, 66541218865, 1084982173641, 18752743351339, 342523093859011, 6593167693927885, 133408305489947029, 2831112931136162775
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Maintained by
N. J. A. Sloane
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Last modified December 16 17:18 EST 2009. Contains 170825 sequences.
AT&T Labs Research
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