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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 * A052581 A052605 A195917

Adjacent sequences:  A124654 A124655 A124656 * A124658 A124659 A124660

KEYWORD

nonn

AUTHOR

Tanya Khovanova, Dec 27 2006

STATUS

approved

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Last modified May 30 06:51 EDT 2017. Contains 287302 sequences.