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A060423 Number of obtuse triangles made from vertices of a regular n-gon. +0
2
0, 0, 0, 0, 0, 5, 6, 21, 24, 54, 60, 110, 120, 195, 210, 315, 336, 476, 504, 684, 720, 945, 990, 1265, 1320, 1650, 1716, 2106, 2184, 2639, 2730, 3255, 3360, 3960, 4080, 4760, 4896, 5661, 5814, 6669, 6840, 7790, 7980, 9030, 9240, 10395, 10626 (list; graph; listen)
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Last modified December 7 08:40 EST 2009. Contains 170430 sequences.


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