id:A015580 - OEIS Search Results

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Linear 2nd order recurrence.

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1

0, 1, 9, 85, 801, 7549, 71145, 670501, 6319089, 59553805, 561260601, 5289560629, 49851088065, 469818035101, 4427766668169, 41729172153925, 393273616058001, 3706379233137709, 34930507562471385 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n) = 9 a(n-1) + 4 a(n-2).`
	CROSSREFS	`Adjacent sequences: A015577 A015578 A015579 this_sequence A015581 A015582 A015583` `Sequence in context: A037686 A086627 A024118 this_sequence A108427 A142982 A029711`
	KEYWORD	`nonn,easy`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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Last modified October 10 20:39 EDT 2008. Contains 144831 sequences.

AT&T Labs Research