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A301748
Number of faces in the n-polygon diagonal intersection graph.
0
5, 12, 25, 51, 81, 155, 221, 376, 445, 782, 953, 1457, 1697, 2501, 2467, 4030, 4501, 6176, 6821, 9087, 9025, 12927, 13989, 17876, 19181, 24130, 21481, 31901, 33857, 41417, 43793, 52922, 52957, 66676, 69997, 82955, 86801, 102051, 97735, 124272, 129405, 149942, 155849
OFFSET
4,1
LINKS
Eric Weisstein's World of Mathematics, Face
Eric Weisstein's World of Mathematics, Polygon Diagonal Intersection Graph
FORMULA
a(n) = 2-A007569(n)+A135565(n) (by the polyhedral formula).
CROSSREFS
Cf. A007569 (vertex count).
Cf. A135565 (edge count).
Sequence in context: A303854 A331714 A086168 * A108201 A289586 A223233
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Mar 26 2018
STATUS
approved