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A189417 Number of kites on a (n X n)-grid (or geoboard) 4
0, 1, 10, 58, 222, 631, 1584, 3340, 6504, 11697, 19978, 31922, 49822, 74167, 107672, 152484, 211944, 286725, 383578, 502262, 651526, 833979, 1056104, 1318104, 1637336, 2011577, 2452634, 2965902, 3568086 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

Only convex kites are counted, not concave kites (sometimes called darts or arrowheads).

LINKS

Table of n, a(n) for n=1..29.

Weisstein, Eric W.: MathWorld -- Kite.

Nathaniel Johnston, C program for computing terms

CROSSREFS

Cf. A189413, A189414.

Sequence in context: A229074 A103417 A189072 * A060157 A055583 A242202

Adjacent sequences:  A189414 A189415 A189416 * A189418 A189419 A189420

KEYWORD

nonn

AUTHOR

Martin Renner, Apr 21 2011

EXTENSIONS

a(7) - a(29) from Nathaniel Johnston, Apr 27 2011

STATUS

approved

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Last modified November 18 00:56 EST 2018. Contains 317279 sequences. (Running on oeis4.)