A051233 - OEIS

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A051233

Number of unit squares at least 50% covered by a circle inscribed in an integer square of size n X n.

1, 4, 9, 12, 21, 32, 37, 52, 65, 80, 97, 112, 137, 152, 177, 208, 225, 256, 289, 316, 349, 384, 421, 448, 489, 536, 577, 612, 665, 716, 749, 812, 857, 912, 965, 1020, 1085, 1124, 1201, 1264, 1313 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	EXAMPLE	`a(2)=4 because an inscribed circle in a 2 X 2 grid covers 50% of all the unit squares within it.`
	CROSSREFS	`Sequence in context: A157650 A119640 A186130 * A124623 A197681 A197624` `Adjacent sequences: A051230 A051231 A051232 * A051234 A051235 A051236`
	KEYWORD	`easy,nonn`
	AUTHOR	`Joe K. Crump (joecr(AT)carolina.rr.com)`

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Last modified February 14 10:01 EST 2012. Contains 205614 sequences.