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

 

Logo

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A295445 a(n) = (18*n)!*(2*n)!/((9*n)!*(6*n)!*(5*n)!). 1
1, 408408, 802241960520, 1823169705017624880, 4396944340992842923469640, 10954213672604884898541157653408, 27856219773497860095974794307896603536, 71846723613356502547294848257330357588794200, 187234481335648875117449455455153824826269008835400 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..8.

FORMULA

G.f.: hypergeom([1/18, 5/18, 7/18, 1/2, 11/18, 13/18, 17/18], [1/5, 1/3, 2/5, 3/5, 2/3, 4/5], 8707129344/3125*x).

CROSSREFS

Cf. A295431.

Sequence in context: A043609 A220988 A357909 * A183705 A233995 A182116

Adjacent sequences: A295442 A295443 A295444 * A295446 A295447 A295448

KEYWORD

nonn

AUTHOR

Gheorghe Coserea, Nov 27 2017

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 November 29 06:00 EST 2022. Contains 358422 sequences. (Running on oeis4.)