A300552 Number of 4-cycles in the n-polygon diagonal intersection graph.

0, 5, 10, 24, 35, 80, 90, 170, 220, 420, 364, 644, 780, 1120, 1139, 1854, 1748, 2580, 2898, 3916, 3450, 6072, 5350, 7046, 7398, 10024, 10063, 14250, 13795, 16608, 16566, 21114, 21595, 26316, 26640, 32718, 32370, 39520, 38622, 52416, 47558, 56232, 57240

Offset

3,2

Links

Andrew Howroyd, Table of n, a(n) for n = 3..100

Eric Weisstein's World of Mathematics, Graph Cycle

Eric Weisstein's World of Mathematics, Polygon Diagonal Intersection Graph

Crossrefs

Cf. A062361 (3-cycles), A300553 (5-cycles), A300554 (6-cycles).

Sequence in context: A098112 A237435 A280721 * A358259 A037240 A182095

Adjacent sequences: A300549 A300550 A300551 * A300553 A300554 A300555

Keyword

nonn

Author

Eric W. Weisstein, Mar 08 2018

Extensions

Terms a(21) and beyond from Andrew Howroyd, Mar 11 2018

Status

approved