A179352 - OEIS

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

%S 1,2,6,24,120,720,4320,25920,155520,858120,4498296,23026074,117437746,

%T 604907611,3173843821,16812885360,89389649752,475278119520,

%U 2522515936704,13358285027136,70620776750592,372942661980096,1968609876492672

%N Number of permutations of 1..n with i-8<=p(i)<=i+5

%H R. H. Hardin, <a href="/A179352/b179352.txt">Table of n, a(n) for n=1..400</a>

%K nonn

%O 1,2

%A _R. H. Hardin_ Jul 11 2010