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A264381 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.

%I A264381 #4 Nov 12 2015 08:02:48
%S A264381 1,13,80,385,2345,14329,88264,538417,3284212,20034334,122324128,
%T A264381 746763789,4557854384,27820780958,169811407936,1036520322168,
%U A264381 6326740063001,38617694163183,235716525841304,1438783215929873
%N A264381 Number of (3+1)X(n+1) arrays of permutations of 0..n*4+3 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.
%C A264381 Row 3 of A264379.
%H A264381 R. H. Hardin, <a href="/A264381/b264381.txt">Table of n, a(n) for n = 1..210</a>
%H A264381 R. H. Hardin, <a href="/A264381/a264381.txt">Empirical recurrence of order 70</a>
%F A264381 Empirical recurrence of order 70 (see link above)
%e A264381 Some solutions for n=4
%e A264381 ..1..6..5..8..7....1..2..5..4..9....5..2..7..4..9....5..2..3..8..7
%e A264381 ..0.11..2.13.12....0..7..8..3.12....0..1..8..3.12....0..1.12..9..4
%e A264381 .15..3..4.16..9...15..6.17.16.19...15..6.13.16.17...15..6.13.16.17
%e A264381 .10.17.18.19.14...10.11.18.13.14...10.11.18.19.14...10.11.18.19.14
%Y A264381 Cf. A264379.
%K A264381 nonn
%O A264381 1,2
%A A264381 _R. H. Hardin_, Nov 12 2015