A052436 Number of canonical polygons of n sides.

0, 0, 1, 3, 3, 9, 13, 52, 140, 501, 1763, 6785, 25571, 99907, 392230, 1564989, 6297892, 25601641, 104846143, 432629580

Offset

1,4

Comments

There are exactly 8 convex canonical polygons: 1 with n=3, 3 with n=4, 1 with n=5, 2 with n=6, 1 with n=8. - Ronald Kyrmse, Aug 18 2021

Links

Table of n, a(n) for n=1..20.

Lars Blomberg, Examples of Canonical Polygons for n = 3..20

Sean A. Irvine, Java program (github)

Ronald Kyrmse, Canonical Polygons.

Ronald Kyrmse, Canonical Polygons.

Eric Weisstein's World of Mathematics, Binomial Coefficient.

Eric Weisstein's World of Mathematics, Canonical Polygon.

Crossrefs

Cf. A307387, A307391, A307426, A307454, A307455, A307456, A307519.

Sequence in context: A091328 A348402 A138383 * A243790 A267296 A122847

Adjacent sequences: A052433 A052434 A052435 * A052437 A052438 A052439

Keyword

nonn,more

Author

Eric W. Weisstein

Extensions

Corrected and extended by Keith Schneider (schneidk(AT)email.unc.edu), Oct 25 2007

Offset changed to 1 and a(14)-a(18) from Lars Blomberg, Feb 18 2019

a(19)-a(20) from Lars Blomberg, Apr 23 2019

a(12) corrected by Sean A. Irvine, Nov 12 2021

Status

approved