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A334459 Number of edges in a polygon whose boundary consists of n+2 equally space points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition. 3
0, 5, 24, 86, 265, 582, 1260, 2235, 3861, 6055, 9416, 13366, 19409, 26296, 35408, 46569, 60945, 76527, 97432, 119703, 147753, 178670, 216844, 256401, 306825, 358719, 421848, 487960, 567617, 647259, 747596, 847765, 966609, 1088541, 1232280, 1376016, 1548265 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
A semicircular polygon with 2n+2 points is created by placing n+2 equally spaced vertices along the semicircle's arc (including the two end vertices). Also place n+2 equally spaced vertices along the diameter (again including the same two end vertices). Now connect every pair of vertices by a straight line segment. The sequence gives the number of edges in the resulting figure.
LINKS
CROSSREFS
Sequence in context: A000347 A270906 A268587 * A270682 A272420 A089095
KEYWORD
nonn
AUTHOR
Lars Blomberg, May 01 2020
STATUS
approved

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Last modified June 13 10:09 EDT 2024. Contains 373383 sequences. (Running on oeis4.)