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A052436 Canonical polygons of n sides. 8
0, 0, 1, 3, 3, 9, 13, 52, 140, 501, 1763, 6786, 25571, 99907, 392230, 1564989, 6297892, 25601641, 104846143, 432629580 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

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

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

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: A303640 A091328 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

Changed offset to 1 and a(14)-a(18) from Lars Blomberg, Feb 18 2019

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

STATUS

approved

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Last modified October 14 05:08 EDT 2019. Contains 327995 sequences. (Running on oeis4.)