id:A113311 - OEIS Search Results

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

+0
6

1, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Row sums of A113310.`
	FORMULA	`a(n)=sum{k=0..n, sum{i=0..n-k, (-1)^i*C(i+k-2, i)}}`
	CROSSREFS	`Adjacent sequences: A113308 A113309 A113310 this_sequence A113312 A113313 A113314` `Sequence in context: A007485 A018244 A090589 this_sequence A064042 A096343 A069812`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 25 2005`

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Last modified October 5 16:50 EDT 2008. Contains 144613 sequences.

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