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A098510 Row sums of a matrix associated to the inverse of a Catalan scaled binomial matrix. 1
1, 2, 5, 20, 49, 210, 429, 2860, 7293, 34034, 113373, 537472, 1359507, 6611810, 24627135, 37917616, 177181213, 973514514, 1647439975, 12026570280, 17818756259, 98555142278, 502860886675, 4577646742140, 6402665244089 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

Row sums of A098509.

LINKS

Table of n, a(n) for n=0..24.

FORMULA

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

CROSSREFS

Sequence in context: A136882 A136901 A136897 * A168541 A124264 A274239

Adjacent sequences: A098507 A098508 A098509 * A098511 A098512 A098513

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Sep 11 2004

STATUS

approved

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Last modified March 29 03:38 EDT 2023. Contains 361596 sequences. (Running on oeis4.)