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A264384 Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1. 1

%I

%S 0,347,22484,828400,48714516,2546661201,135926940964,7028273171990,

%T 373730198247984,19642240165929614,1037225681776050162,

%U 54639267702225385178,2881673580028315975296,151886941377998952959800

%N Number of (6+1)X(n+1) arrays of permutations of 0..n*7+6 with each element having directed index change 2,-2 -1,0 -1,2 1,0 or 0,-1.

%C Row 6 of A264379.

%H R. H. Hardin, <a href="/A264384/b264384.txt">Table of n, a(n) for n = 1..102</a>

%e Some solutions for n=3

%e ..1..5..4..7....4..2..6..5....4..2..3..7....1..2..4..7....1..2..4..5

%e ..0..6.10.11....0..1..8..3....0..1..8.11....0..6..8..3....0..6..8..9

%e ..2..3.12.15....9.10.11.13...12..5.14.13....9..5.12.13...12..3.11..7

%e ..8..9.18.19...16..7.15.17....6..9.10.19...16.17.10.19...13.14.15.19

%e .20.13.14.21...12.18.19.21...17.18.22.21...20.11.14.15...10.18.22.21

%e .16.17.24.27...14.25.24.27...16.15.24.25...24.22.26.25...16.17.24.25

%e .25.26.22.23...20.26.22.23...20.26.27.23...18.21.27.23...20.26.27.23

%Y Cf. A264379.

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 12 2015

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Last modified August 25 05:19 EDT 2019. Contains 326318 sequences. (Running on oeis4.)