id:A099236 - OEIS Search Results

Search: id:A099236

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Sums of antidiagonals of A099233.

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1, 2, 3, 5, 9, 18, 39, 91, 226, 594, 1643, 4763, 14419, 45444, 148714, 504150, 1766930, 6390720, 23815168, 91306968, 359694457, 1454213026, 6027213531, 25583995337, 111118605583, 493407322280, 2238131105770, 10363617299670, 48954143141361 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum{j=0..n, sum{k=0..n-j, binomial(j(n-j-k), k)}}`
	CROSSREFS	`Sequence in context: A096753 A022862 A097332 this_sequence A130581 A051236 A003218` `Adjacent sequences: A099233 A099234 A099235 this_sequence A099237 A099238 A099239`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 08 2004`

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Last modified August 29 17:54 EDT 2008. Contains 143238 sequences.

AT&T Labs Research