login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A028917 a(n) = (3*n+1)! / (24*n). 0
1, 105, 50400, 64864800, 174356582400, 844757641728000, 6690480522485760000, 80787552309015552000000, 1411520113943119724544000000, 34261827725741345073856512000000, 1118306056968197503210676551680000000, 47790809344535920299708262436044800000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..12.

MATHEMATICA

Table[(3n+1)!/(24n), {n, 10}] (* Harvey P. Dale, Jan 31 2015 *)

PROG

(MAGMA) [Factorial(3*n+1)/(24*n): n in [1..20]]; // Vincenzo Librandi, Feb 01 2015

CROSSREFS

Sequence in context: A167779 A275461 A054862 * A145627 A171116 A199100

Adjacent sequences:  A028914 A028915 A028916 * A028918 A028919 A028920

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

EXTENSIONS

a(11)-a(12) from Vincenzo Librandi, Feb 01 2015

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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified January 18 20:19 EST 2018. Contains 297865 sequences.