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%I #4 Nov 11 2015 19:48:37
%S 256,75025,49000000,10878455069,4241136597604,1400983500645217,
%T 513959727627375369,177045004728184406986,63460182455433271780660,
%U 22401940593595999915880850,7987037973987954760973196580
%N Number of (7+1)X(n+1) arrays of permutations of 0..n*8+7 with each element having index change +-(.,.) 0,0 0,1 or 1,2.
%C Row 7 of A264341.
%H R. H. Hardin, <a href="/A264347/b264347.txt">Table of n, a(n) for n = 1..15</a>
%e Some solutions for n=2
%e ..1..0..2....0..1..2....0..1..2....5..1..2....0..2..1....5..1..2....0..1..2
%e ..3..4..5....4..3..5....3..4..5....3..4..0....3..4..5....4..3..0....3..4..5
%e ..6..8..7....6..7..8....6..8..7....6..7..8....7..6..8....6..7..8....7..6..8
%e .10..9.11....9.10.11....9.10.11....9.11.10...10..9.11....9.10.11...14.11.10
%e .13.12.14...12.13.14...17.13.14...12.13.14...17.13.14...13.12.14...12.13..9
%e .15.17.16...20.16.17...15.16.12...15.17.16...20.16.12...20.17.16...15.16.17
%e .23.20.19...18.19.15...23.20.19...18.20.19...23.19.15...23.19.15...18.19.20
%e .22.21.18...21.23.22...22.21.18...21.22.23...22.21.18...21.22.18...21.23.22
%Y Cf. A264341.
%K nonn
%O 1,1
%A _R. H. Hardin_, Nov 11 2015