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A264133 Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 1,2.

%I A264133 #6 Nov 10 2015 11:06:00
%S A264133 1,13,169,1040,6400,53280,443556,3383280,25806400,203738480,
%T A264133 1608491236,12558632416,98054154496,768752950768,6027088830169,
%U A264133 47188038099235,369450492999025,2893968831142495,22668952280018641,177540636808778880
%N A264133 Number of (2+1)X(n+1) arrays of permutations of 0..n*3+2 with each element having index change +-(.,.) 0,0 0,2 or 1,2.
%C A264133 Row 2 of A264131.
%H A264133 R. H. Hardin, <a href="/A264133/b264133.txt">Table of n, a(n) for n = 1..210</a>
%e A264133 Some solutions for n=4
%e A264133 ..0..3..4..1..2....0..1..9..3..4....0..1..4..3..2....2..1..0..3..4
%e A264133 ..5..8.14..6..9....7..6..5..8..2....5..8..7..6..9....7..6.14..8..9
%e A264133 .12.13.10.11..7...10.13.12.11.14...10.11.14.13.12...10.11..5.13.12
%Y A264133 Cf. A264131.
%K A264133 nonn
%O A264133 1,2
%A A264133 _R. H. Hardin_, Nov 03 2015