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!)
A174299 a(n) = floor(n!*exp(-n)). 1
1, 0, 0, 0, 0, 0, 1, 4, 13, 44, 164, 666, 2943, 14075, 72491, 400020, 2354549, 14725237, 97508021, 681552735, 5014584787, 38740015633, 313536416649, 2652902840111, 23422761943259, 215418814359446, 2060451979153567, 20465943911593383, 210812000258805578, 2249048624575857158, 24821362535291019333 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,8

LINKS

Table of n, a(n) for n=0..30.

MAPLE

A174299:=n->floor(n!*exp(-n)): seq(A174299(n), n=0..30); # Wesley Ivan Hurt, Aug 20 2015

MATHEMATICA

Table[Floor[n!*Exp[ -n]], {n, 0, 20}]

PROG

(PARI) first(m)=vector(m, i, i--; floor(i!/exp(i))) \\ Anders Hellström, Aug 20 2015

(MAGMA) [Floor(Factorial(n) / (Exp(n))): n in [0..40]]; // Vincenzo Librandi, Aug 21 2015

CROSSREFS

Sequence in context: A124463 A081197 A005490 * A285188 A192255 A035356

Adjacent sequences:  A174296 A174297 A174298 * A174300 A174301 A174302

KEYWORD

nonn,easy

AUTHOR

Roger L. Bagula, Mar 15 2010

EXTENSIONS

Notation standardized by the Assoc. Eds. of the OEIS, Mar 31 2010

Added more terms and prepended terms a(0)..a(5), Joerg Arndt, Aug 13 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 3 14:25 EDT 2020. Contains 333197 sequences. (Running on oeis4.)