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A345649 Number of vertices formed when connecting all 4n points on the perimeter of an n X n square by infinite lines. 3
0, 5, 61, 465, 1585, 5257, 9749, 24025, 38381, 67177, 100889, 176005, 210033, 360877, 450349, 589581, 779541, 1127509, 1251805, 1806061, 1970129, 2504401, 3116945, 4017701, 4163753, 5433657, 6335589 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

See A345459 for images of the polygons.

LINKS

Table of n, a(n) for n=0..26.

FORMULA

a(n) = A345650(n) - A345459(n) + 1.

CROSSREFS

Cf. A345459 (number of polygons), A345650 (number of edges), A255011, A345648, A344993, A344857, A092098, A007678.

Sequence in context: A281713 A060060 A183379 * A000363 A200956 A203358

Adjacent sequences:  A345646 A345647 A345648 * A345650 A345651 A345652

KEYWORD

nonn,more

AUTHOR

Scott R. Shannon and N. J. A. Sloane, Jun 21 2021

STATUS

approved

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Last modified May 26 04:43 EDT 2022. Contains 354074 sequences. (Running on oeis4.)