Search: id:A124657
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%I A124657
%S A124657 24,120,720,5040,40320,362880,3628800,39916800,479001600,6227020800,
%T A124657 87178291200,1307674368000,20922789888000,355687428096000,
%U A124657 6402373705728000,121645100408832000,2432902008176640000
%N A124657 Factorials that are abundant numbers.
%C A124657 This sequence is the sequence of factorials starting from 24. (It can 
               be easily checked that any number divisible by 12 is abundant.)
%p A124657 restart: 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);# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), 
               Apr 03 2009]
%Y A124657 Cf. A000142 Factorial numbers. A005101 Abundant numbers.
%Y A124657 Sequence in context: A052760 A052754 A050213 this_sequence A052581 A052605 
               A042120
%Y A124657 Adjacent sequences: A124654 A124655 A124656 this_sequence A124658 A124659 
               A124660
%K A124657 nonn
%O A124657 1,1
%A A124657 Tanya Khovanova (tanyakh(AT)yahoo.com), Dec 27 2006

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