%I #4 Mar 31 2012 12:35:42

%S 20,3846,1173512,439192790,184619047020,83659800759150,

%T 39956935830445136,19840440079542390102,10150867545062935511900,

%U 5318188148539280718247346,2840554565353471719458163720,1541655842245048541457829216574

%N Number of permutations of n copies of 1..5 with all adjacent differences <= 2 in absolute value.

%H R. H. Hardin, <a href="/A177323/b177323.txt">Table of n, a(n) for n=1..15</a>

%K nonn

%O 1,1

%A _R. H. Hardin_ May 06 2010