A053172 - OEIS

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A053172

Number of 3 X 3 integer matrices with elements in the range [ -n,n ] which represent a three-fold rotation.

308, 1916, 9572, 20732, 43148, 73052, 155156, 219716, 331892, 440036 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	CROSSREFS	`A053170 = 2 * (1 + A053171 + this sequence + A053173 + A053174).` `Sequence in context: A176091 A118284 A118843 * A200783 A091552 A159004` `Adjacent sequences: A053169 A053170 A053171 * A053173 A053174 A053175`
	KEYWORD	`nonn`
	AUTHOR	`Ralf W. Grosse-Kunstleve (rwgk(AT)cci.lbl.gov), Mar 26 2000`

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Last modified February 17 11:46 EST 2012. Contains 206011 sequences.