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A189648 Number of nX7 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.

%I A189648 #7 Jul 22 2025 11:51:49
%S A189648 21,24577,11047585,6156828073,3292827578005,1778231752192145,
%T A189648 958681588788944613,517069529154777840681,278864582730126081862829,
%U A189648 150399411952876520217908417,81114338143785708962035111845
%N A189648 Number of nX7 array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally.
%C A189648 Column 7 of A189650
%H A189648 R. H. Hardin, <a href="/A189648/b189648.txt">Table of n, a(n) for n = 1..78</a>
%e A189648 Some solutions for 3X7
%e A189648 ..0..7..2..4..3..5.12....0..7.10..2..3..6..5....0..2..3..9..5..4..6
%e A189648 ..1..9.15.10.11..6.13....1..9.15.11.19..4.12....1.14.15.10.12.11.19
%e A189648 ..8.14.16.17.18.20.19....8.14.16.17.18.13.20....8..7.16.18.17.13.20
%K A189648 nonn
%O A189648 1,1
%A A189648 _R. H. Hardin_ Apr 24 2011