id:A124623 - OEIS Search Results

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Number of unit squares having center within inscribed circle of an n X n integer square.

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1, 4, 9, 12, 21, 32, 37, 52, 69, 80, 97, 112, 137, 156, 177, 208, 225, 256, 293, 316, 349, 384, 421, 448, 489, 540, 577, 616, 665, 716, 749, 812, 861, 912, 973, 1020, 1085, 1124, 1201, 1264, 1313, 1396, 1457, 1528, 1597, 1664, 1741, 1804, 1885, 1976, 2053, 2128 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`a(n) = n^2 - 4*k(n); k(n) = number of exterior centers per quadrant.`
	CROSSREFS	`Cf. A051233.` `Sequence in context: A084789 A119640 A051233 this_sequence A069082 A083351 A055381` `Adjacent sequences: A124620 A124621 A124622 this_sequence A124624 A124625 A124626`
	KEYWORD	`easy,nonn`
	AUTHOR	`William A. Berry (waberr2(AT)uky.edu), Dec 21 2006`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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