OFFSET
5,1
COMMENTS
Original name: Natural numbers of the form (n!-5)/5.
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 5..300
FORMULA
E.g.f.: (120 - 60*x^2 - 40*x^3 - 15*x^4 + 19*x^5)/(120*(1-x)) - exp(x). - G. C. Greubel, Oct 18 2018
MATHEMATICA
Table[(n! - 5)/5, {n, 5, 20}]
PROG
(Magma) [(Factorial(n)-5)/5: n in [5..25]]; // Vincenzo Librandi, Jul 20 2011
(PARI) for(n=5, 25, print1((n! -5)/5, ", ")) \\ G. C. Greubel, Oct 18 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Artur Jasinski, Apr 11 2008
EXTENSIONS
Corrected offset from 4 to 5 by Vincenzo Librandi, Jul 20 2011
New name from Jon E. Schoenfield, Oct 18 2018
STATUS
approved