login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A166337 a(n)=(2n+0^n)*C(4n,2n). 7
1, 12, 280, 5544, 102960, 1847560, 32449872, 561632400, 9617286240, 163352435400, 2756930576400, 46290177201840, 773942488394400, 12893881856650704, 214163336821292320, 3547937446945842720 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

The aerated sequence gives the central coefficients in number triangle A166335.

LINKS

Table of n, a(n) for n=0..15.

MATHEMATICA

Join[{1}, Table[(2n)*Binomial[4n, 2n], {n, 20}]] (* Harvey P. Dale, Jan 21 2015 *)

CROSSREFS

Sequence in context: A351765 A295037 A295528 * A183767 A009604 A154669

Adjacent sequences:  A166334 A166335 A166336 * A166338 A166339 A166340

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Oct 12 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 14 10:58 EDT 2022. Contains 356116 sequences. (Running on oeis4.)