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
KEYWORD
nonn
AUTHOR
Tanya Khovanova, Dec 27 2006
STATUS
approved