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A124657
Factorials that are abundant numbers.
1
24, 120, 720, 5040, 40320, 362880, 3628800, 39916800, 479001600, 6227020800, 87178291200, 1307674368000, 20922789888000, 355687428096000, 6402373705728000, 121645100408832000, 2432902008176640000
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.)
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 * A342856 A293050 A052581
KEYWORD
nonn
AUTHOR
Tanya Khovanova, Dec 27 2006
STATUS
approved