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!)
A295470 a(n) = (20*n)!*(6*n)!*n!/((12*n)!*(10*n)!*(3*n)!*(2*n)!). 1
1, 83980, 29966636700, 12398706131799988, 5447952226877283703580, 2473617870747229982625186480, 1146602219745194113307246953503300, 539110100779634346434520330628287843000, 256130864665265316470308479790547084791062300, 122657586881362583078239819278500645564891283341200 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..9.

FORMULA

G.f.: hypergeom([1/20, 3/20, 7/20, 9/20, 11/20, 13/20, 17/20, 19/20], [1/12, 1/3, 5/12, 1/2, 7/12, 2/3, 11/12], 10000000000/19683*x).

CROSSREFS

Cf. A295431.

Sequence in context: A205197 A203395 A333683 * A237492 A345606 A346280

Adjacent sequences:  A295467 A295468 A295469 * A295471 A295472 A295473

KEYWORD

nonn

AUTHOR

Gheorghe Coserea, Nov 28 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 August 9 06:47 EDT 2022. Contains 356018 sequences. (Running on oeis4.)