%I #6 Nov 10 2015 10:31:55

%S 16,1441,86633,2604481,102742049,4952396901,224559467921,

%T 9479627840080,407499168253313,17951972257163801,787313274461726480,

%U 34237567537967020880,1490472641241784860976,65073777514668815019417

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

%C Row 3 of A263973.

%H R. H. Hardin, <a href="/A263975/b263975.txt">Table of n, a(n) for n = 1..92</a>

%e Some solutions for n=3

%e ..2..4..0..7....2..3..5..7....5..3..0..7....5..3..0..7....2..3..0..6

%e ..1..8..3.11....6..0..1.10....8..1.10..2....6..2..1.10....1..7..9..5

%e .13.12..5..6...13..4..8.14....4.12..6.14....4.12.13.14...12..4..8.15

%e .14.15..9.10....9.15.12.11....9.15.11.13....8.15..9.11...14.10.11.13

%Y Cf. A263973.

%K nonn

%O 1,1

%A _R. H. Hardin_, Oct 30 2015