Search: id:A060836
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%I A060836
%S A060836 0,0,0,0,44,264,924,2464,5544,11088,20328,34848,56628,88088,132132,
%T A060836 192192,272272,376992,511632,682176,895356,1158696,1480556,1870176,
%U A060836 2337720,2894320,3552120,4324320,5225220,6270264,7476084,8860544
%N A060836 Number of permutations of n letters where exactly 5 change position.
%H A060836 Harry J. Smith, <a href="b060836.txt">Table of n, a(n) for n=1,...,1000</
               a>
%F A060836 a(n) = 44*C(n, 5). a(n) = a(n-1)*n/(n-5).
%e A060836 a(8) = a(7) x 8/(8-5) = 924 x 8/3 = 2464
%o A060836 (PARI) { for (n=1, 1000, if (n>5, a*=n/(n - 5), if (n<5, a=0, a=44)); 
               write("b060836.txt", n, " ", a); ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), 
               Jul 19 2009]
%Y A060836 For changing 0, 1, 2, 3, 4, 5, n-4, n elements see A000012, A000004, 
               A000217 (offset), A007290, A060008, A060836, A000475, A000166. Also 
               see A000332, A008290.
%Y A060836 Rencontre sequences are A000166 A000240 A000387 A000449 and A000475.
%Y A060836 A diagonal of A008291.
%Y A060836 Sequence in context: A031175 A098826 A160284 this_sequence A135182 A094794 
               A024304
%Y A060836 Adjacent sequences: A060833 A060834 A060835 this_sequence A060837 A060838 
               A060839
%K A060836 nonn
%O A060836 1,5
%A A060836 Robert Goodhand (rgoodhand(AT)hotmail.com), May 12 2001

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