Search: id:A001689
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%I A001689 M4531 N1920
%S A001689 8,44,309,2428,21234,205056,2170680,25022880,312273360,4196666880,
%T A001689 60451816320,929459059200,15196285843200,263309095526400,4820517384883200,
%U A001689 92987329455820800,1885246675183872000,40080616912207872000,891690242177839104000
%N A001689 5th differences of factorial numbers.
%D A001689 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, 
               Academic Press, 1995 (includes this sequence).
%D A001689 N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 
               (includes this sequence).
%D A001689 A. van Heemert, Cyclic permutations with sequences and related problems, 
               J. Reine Angew. Math., 198 (1957), 56-72.
%H A001689 Milan Janjic, <a href="http://www.pmfbl.org/janjic/">Enumerative Formulas 
               for Some Functions on Finite Sets</a>
%H A001689 <a href="Sindx_Fa.html#factorial">Index entries for sequences related 
               to factorial numbers</a>
%F A001689 a(n) = (n^5 + 10n^4 + 45n^3 + 100n^2 + 109n + 44)*n! - Mitch Harris (maharri(AT)gmail.com), 
               Jul 10 2008
%Y A001689 Sequence in context: A155604 A126476 A112908 this_sequence A028565 A129553 
               A075863
%Y A001689 Adjacent sequences: A001686 A001687 A001688 this_sequence A001690 A001691 
               A001692
%K A001689 nonn,easy
%O A001689 -1,1
%A A001689 N. J. A. Sloane (njas(AT)research.att.com).

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