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A189434 Number of nX8 array permutations with each element not moving, or moving one space N, SW or SE.

%I A189434 #7 Jul 22 2025 11:44:47
%S A189434 1,34,1165,42205,1940868,79826592,3467525301,150293731826,
%T A189434 6540976400913,285499775348185,12468705796935816,545183904690537217,
%U A189434 23847514960230618480,1043490861604911009586,45668994694128002511925
%N A189434 Number of nX8 array permutations with each element not moving, or moving one space N, SW or SE.
%C A189434 Column 8 of A189435
%H A189434 R. H. Hardin, <a href="/A189434/b189434.txt">Table of n, a(n) for n = 1..50</a>
%e A189434 Some solutions for 3X8
%e A189434 ..8..9.10.11..4.13.14..7....0..1..2..3..4..5..6..7....0..1..2..3..4..5..6..7
%e A189434 ..1..0..3..2..5.21.22..6...16.17.18.19.12.13.22.23....8..9.18.19.12.13.14.15
%e A189434 .16.17.18.19.20.12.15.23....9..8.11.10.20.21.15.14...16.17.11.10.20.21.22.23
%K A189434 nonn
%O A189434 1,2
%A A189434 _R. H. Hardin_ Apr 22 2011