A146533 - OEIS

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A146533

Catalan transform of A135092.

1, 7, 21, 70, 245, 882, 3234, 12012, 45045, 170170, 646646, 2469012, 9464546, 36402100, 140408100, 542911320, 2103781365, 8167621770, 31762973550, 123708423300, 482462850870, 1883902560540, 7364346373020

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..22.

FORMULA

a(n) = Sum_{k, 0<=k<=n}A039599(n,k)*A010687(k) = Sum_{k, 0<=k<=n} A106566(n,k)*A135092(k).

a(n) = (7*C(2n,n)-5*0^n)/2.

CROSSREFS

Cf. A088218, A000984, A029651, A100320, A029609, A144706.

Sequence in context: A113859 A245404 A215494 * A208534 A135576 A153497

Adjacent sequences: A146530 A146531 A146532 * A146534 A146535 A146536

KEYWORD

nonn

AUTHOR

Philippe Deléham, Oct 31 2008

STATUS

approved