A066541 - OEIS

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A066541

Number of normal subgroups of the group GL(2,Z_n) of invertible 2 X 2 matrices mod n (sequence A000252).

1, 3, 5, 12, 6, 17, 8, 46, 14, 22, 8, 82, 12, 28, 38 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	CROSSREFS	`Cf. A066514.` `Sequence in context: A038198 A079037 A101315 * A087122 A037221 A080560` `Adjacent sequences: A066538 A066539 A066540 * A066542 A066543 A066544`
	KEYWORD	`nonn`
	AUTHOR	`Sharon Sela (sharonsela(AT)hotmail.com), Jan 07 2002`

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Last modified February 17 16:49 EST 2012. Contains 206058 sequences.