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Search: id:A098506
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A098506 Row sums of the number triangle A098505. +0
2
1, 2, 3, 8, 9, 22, 19, 100, 101, 266, 435, 860, 1603, 4110, 6529, 4672, 12397, 21558, 7845, 57648, 9447, 50190, 199053, 1880620, 1710309, 7344462, 7529113, 34610408, 555889, 3316906, 21528385, 167087336, 124402817, 73289470, 764401867 (list; graph; listen)
OFFSET

0,2

FORMULA

a(n)=sum{k=0..n, numerator((n+1)binomial(n, k)/binomial(2n, n))}

CROSSREFS

Sequence in context: A093765 A104577 A103026 this_sequence A163168 A085453 A030439

Adjacent sequences: A098503 A098504 A098505 this_sequence A098507 A098508 A098509

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Sep 11 2004

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Last modified December 9 14:43 EST 2009. Contains 170430 sequences.


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