OFFSET
0,3
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..100 (term a(0) added by Sidney Cadot)
Cyril Banderier, Philippe Marchal, and Michael Wallner, Rectangular Young tableaux with local decreases and the density method for uniform random generation (short version), arXiv:1805.09017 [cs.DM], 2018.
Robert Coquereaux and Jean-Bernard Zuber, Counting partitions by genus. II. A compendium of results, arXiv:2305.01100 [math.CO], 2023. See p. 17.
FORMULA
a(n) = (5n)!/(n!(5!)^n). - Christian G. Bower, Sep 15 1998
MATHEMATICA
Table[(5n)!/(n!(5!)^n), {n, 1, 10}] (* Vincenzo Librandi, Jun 26 2012 *)
PROG
(Sage) [rising_factorial(n+1, 4*n)/120^n for n in (0..15)] # Peter Luschny, Jun 26 2012
(Magma) [Factorial(5*n)/(Factorial(n)*Factorial(5)^n): n in [1..10]] // Vincenzo Librandi, Jun 26 2012
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
a(0) from Peter Luschny, Apr 24 2023
STATUS
approved