id:A081686 - OEIS Search Results

Search: id:A081686

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A sum of decreasing powers.

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2

1, 1, -1, 19, 467, 5611, 53459, 455659, 3648707, 28119691, 211372019, 1562038699, 11405181347, 82545287371, 593501306579, 4245828252139, 30255066944387, 214924122640651, 1522971386761139, 10770190567911979, 76039651374633827, 536127709619251531 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Binomial transform of A081685`
	FORMULA	`a(n)=7^n-6^n-5^n-4^n+3*3^n`
	CROSSREFS	`Cf. A081687.` `Sequence in context: A108145 A114350 A012506 this_sequence A003700 A093975 A009081` `Adjacent sequences: A081683 A081684 A081685 this_sequence A081687 A081688 A081689`
	KEYWORD	`easy,sign`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Mar 30 2003`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research