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

 

Logo

Annual Appeal: Please make a donation to keep the OEIS running. In 2018 we replaced the server with a faster one, added 20000 new sequences, and reached 7000 citations (often saying "discovered thanks to the OEIS").
Other ways to donate

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A124657 Factorials that are abundant numbers. 0
24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 479001600, 6227020800, 87178291200, 1307674368000, 20922789888000, 355687428096000, 6402373705728000, 121645100408832000, 2432902008176640000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence is the sequence of factorials starting from 24. (It can be easily checked that any number divisible by 12 is abundant.)

LINKS

Table of n, a(n) for n=1..17.

MAPLE

G(x):=x^4/(1-x): f[0]:=G(x): for n from 1 to 20 do f[n]:=diff(f[n-1], x) od: x:=0: seq(f[n], n=4..20); # Zerinvary Lajos, Apr 03 2009

CROSSREFS

Cf. A000142 Factorial numbers. A005101 Abundant numbers.

Sequence in context: A235702 A052754 A050213 * A293050 A052581 A052605

Adjacent sequences:  A124654 A124655 A124656 * A124658 A124659 A124660

KEYWORD

nonn

AUTHOR

Tanya Khovanova, Dec 27 2006

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 December 16 17:42 EST 2018. Contains 318172 sequences. (Running on oeis4.)