id:A099241 - OEIS Search Results

Search: id:A099241

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Sums of antidiagonals of A099239.

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1, 2, 4, 9, 22, 57, 155, 441, 1311, 4066, 13130, 44046, 153144, 550706, 2044248, 7819897, 30779570, 124487688, 516723174, 2198726181, 9581247648, 42717268934, 194688593966, 906331074605, 4306472500778, 20871165469241, 103106015116437 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum{k=0..n, sum{j=0..n-k, binomial(k(n-k)-(k-1)(j-1), j)}`
	CROSSREFS	`Sequence in context: A130018 A099754 A105633 this_sequence A124380 A059019 A121953` `Adjacent sequences: A099238 A099239 A099240 this_sequence A099242 A099243 A099244`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 08 2004`

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Last modified July 24 12:00 EDT 2008. Contains 142294 sequences.

AT&T Labs Research