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

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