login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A295475 a(n) = (20*n)!*(3*n)!/((10*n)!*(9*n)!*(4*n)!). 1
1, 461890, 935387159850, 2182519096151533552, 5398397695681095146608490, 13787702861800799166026014363140, 35936545440404705429404600374145350960, 94988519542968717273112119046397042704228800, 253668511451664737174164792111754605640400674756970 (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([1/20, 3/20, 7/20, 9/20, 11/20, 13/20, 17/20, 19/20], [1/9, 2/9, 4/9, 1/2, 5/9, 7/9, 8/9], 40960000000000/14348907*x).

CROSSREFS

Cf. A295431.

Sequence in context: A202600 A114671 A270856 * A205765 A216068 A237964

Adjacent sequences:  A295472 A295473 A295474 * A295476 A295477 A295478

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 | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 25 03:28 EDT 2021. Contains 348237 sequences. (Running on oeis4.)