A086443 - OEIS

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A086443

Expansion of x^2/((1-4x)(1-3x)^2).

0, 0, 1, 10, 67, 376, 1909, 9094, 41479, 183412, 792697, 3367618, 14120011, 58605808, 241331965, 987648382, 4022338063, 16318934764, 66007533313, 266354656186, 1072779614035, 4314363685480, 17330677214341, 69552836627830 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,4`
	COMMENTS	`Second binomial transform of A000295. Binomial transform of A066810 (with two leading zeros).`
	FORMULA	`a(n)=4^n-3^n-n3^(n-1)`
	CROSSREFS	`Sequence in context: A163615 A117305 A108275 * A172066 A026844 A026875` `Adjacent sequences: A086440 A086441 A086442 * A086444 A086445 A086446`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 21 2003`

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Last modified February 17 16:35 EST 2012. Contains 206053 sequences.