A119880 - OEIS

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A119880

E.g.f. exp(2x)sech(x).

1, 2, 3, 2, -3, 2, 63, 2, -1383, 2, 50523, 2, -2702763, 2, 199360983, 2, -19391512143, 2, 2404879675443, 2, -370371188237523, 2, 69348874393137903, 2, -15514534163557086903, 2, 4087072509293123892363, 2, -1252259641403629865468283, 2, 441543893249023104553682823 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Transform of 2^n under the matrix A119879.`
	FORMULA	`a(n)=sum{k=0..n, A119879(n,k)2^k}`
	CROSSREFS	`Sequence in context: A015886 A108656 A164962 * A075019 A138960 A115397` `Adjacent sequences: A119877 A119878 A119879 * A119881 A119882 A119883`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), May 26 2006`

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Last modified February 16 19:06 EST 2012. Contains 205945 sequences.