A020984 - OEIS

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A020984

Expansion of 1/((1-9x)(1-11x)(1-12x)).

1, 32, 685, 12260, 198121, 2997512, 43322245, 605523020, 8251539841, 110243798192, 1449890883805, 18826690025780, 241910703467161, 3081364962170072, 38962058064701365, 489593051613776540 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	LINKS	`Index to sequences with linear recurrences with constant coefficients, signature (32,-339,1188)`
	FORMULA	`a(n) = 32a(n-1) -339a(n-2) +1188a(n-3), n>=3. - Vincenzo Librandi, Mar 18 2011` `a(n) = 23a(n-1) -132a(n-2) +9^n, n>=2. - Vincenzo Librandi, Mar 18 2011` `a(n) = 412^(n+1)-11^(n+2)/2+3*9^(n+1)/2. - R. J. Mathar, Mar 19 2011`
	CROSSREFS	`Sequence in context: A028014 A025031 A025008 * A199708 A062261 A060624` `Adjacent sequences: A020981 A020982 A020983 * A020985 A020986 A020987`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com).`

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Last modified February 14 23:53 EST 2012. Contains 205689 sequences.