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Number of permutations of 1..n with i-9<=p(i)<=i+5
1

%I #4 Mar 31 2012 12:35:45

%S 1,2,6,24,120,720,4320,25920,155520,933120,5223720,28065624,148043310,

%T 779305142,4138663683,22326100565,121438789028,662769584476,

%U 3618469944096,19732129903872,107425688617728,584061299353728

%N Number of permutations of 1..n with i-9<=p(i)<=i+5

%H R. H. Hardin, <a href="/A179358/b179358.txt">Table of n, a(n) for n=1..400</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Jul 11 2010