id:A100744 - OEIS Search Results

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Inverse modulo 2 modulo transform of (-2)^n.

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1, -3, 3, -9, 15, -45, 45, -135, 255, -765, 765, -2295, 3825, -11475, 11475, -34425, 65535, -196605, 196605, -589815, 983025, -2949075, 2949075, -8847225, 16711425, -50134275, 50134275, -150402825, 250671375, -752014125, 752014125 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`(-2)^n may be retrieved as sum{k=0..n, mod(binomial(n,k),2)A100744(k)}.`
	FORMULA	`a(n)=sum{k=0..n, (-1)^A010060(n-k)*mod(binomial(n, k), 2)(-2)^k}.`
	CROSSREFS	`Adjacent sequences: A100741 A100742 A100743 this_sequence A100745 A100746 A100747` `Sequence in context: A105423 A062510 A000200 this_sequence A089892 A038221 A099465`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Dec 06 2004`

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Last modified October 9 14:06 EDT 2008. Contains 144831 sequences.

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