id:A099576 - OEIS Search Results

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Row sums of triangle A099575.

+0
2

1, 2, 6, 12, 35, 72, 210, 440, 1287, 2730, 8008, 17136, 50388, 108528, 319770, 692208, 2042975, 4440150, 13123110, 28614300, 84672315, 185122080, 548354040, 1201610592, 3562467300, 7821594872, 23206929840, 51037462560, 151532656696 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=sum{k=0..n, sum{j=0..floor(k/2), binomial(n+j, j)}.`
	CROSSREFS	`Cf. A029907.` `Sequence in context: A096610 A088808 A076278 this_sequence A026549 A120766 A121404` `Adjacent sequences: A099573 A099574 A099575 this_sequence A099577 A099578 A099579`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 23 2004`

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

AT&T Labs Research