A128415 - OEIS

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A128415

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

1, -3, 1, 9, -31, 57, -47, -87, 449, -999, 1201, 393, -5983, 16377, -25199, 10089, 70529, -251943, 473713, -413367, -654751, 3617721, -8234159, 10231593, 2241857, -47651943, 133988401, -211357431, 98118689 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Row sums of number triangle A128414.`
	CROSSREFS	`Sequence in context: A157403 A105951 A038202 * A090479 A141903 A010289` `Adjacent sequences: A128412 A128413 A128414 * A128416 A128417 A128418`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 02 2007`

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.