login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,1

LINKS

Table of n, a(n) for n=4..46.

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

Adjacent sequences:  A301745 A301746 A301747 * A301749 A301750 A301751

KEYWORD

nonn

AUTHOR

Eric W. Weisstein, Mar 26 2018

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 1 08:39 EDT 2020. Contains 337442 sequences. (Running on oeis4.)