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%I #6 Nov 14 2015 16:48:45
%S 121,2960,92052,2870927,89130069,2775259622,86190450233,2677639248483,
%T 83164917517453,2583078930390035,80227727864116428,
%U 2491794046923957866,77392440292663757309,2403726490469501987884,74657152069390240763825
%N Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.
%C Row 7 of A264490.
%H R. H. Hardin, <a href="/A264495/b264495.txt">Table of n, a(n) for n = 1..119</a>
%e Some solutions for n=3
%e ..4..5..3..7....4..5..3..7....4..5..6..7....4..5..6..7....4..2..6..7
%e ..0..6.10.11....0..1.10.11....8..9.10..3....0..9..2..3....0..1.10..3
%e .12..2..1.15...12.13..6..2...12..0..1..2...12.13..1.15...12.13.11.15
%e ..8..9.18.19...16.17.18.19...22.17.18.11...16.14.18.11....8.17..5.19
%e .17.21.14.23....9..8.22.15...26.13.14.23...20..8.19.10...20.18..9.23
%e .16.25.13.27...24.25.26.14...16.25.15.19...24.17.26.27...16.25.26.14
%e .28.29.30.31...28.21.30.31...28.29.30.31...28.29.30.31...28.29.27.31
%e .24.20.26.22...29.20.23.27...24.20.21.27...21.25.23.22...24.30.21.22
%Y Cf. A264490.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 14 2015