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A189433 Number of n X 7 array permutations with each element not moving, or moving one space N, SW or SE.

%I A189433 #7 Jun 26 2025 10:42:53
%S A189433 1,21,441,10069,278105,6944573,181540773,4742833745,124239687001,
%T A189433 3261208487441,85625162598265,2250063012268697,59139108575177913,
%U A189433 1554641730277194809,40872537373376873929,1074626580793742218601
%N A189433 Number of n X 7 array permutations with each element not moving, or moving one space N, SW or SE.
%C A189433 Column 7 of A189435.
%H A189433 R. H. Hardin, <a href="/A189433/b189433.txt">Table of n, a(n) for n = 1..189</a>
%e A189433 Some solutions for 3 X 7
%e A189433 ..0..1..2..3..4.12..6....0..1..9.10.11..5..6....7..8..9.10..4..5.13
%e A189433 .14.15.16.17..5.19.13....7..8..3..2.18..4.13....1..0..3..2.11..6.20
%e A189433 ..8..7.10..9.18.11.20...14.15.16.17.12.19.20...14.15.16.17.18.19.12
%Y A189433 Cf. A189435.
%K A189433 nonn
%O A189433 1,2
%A A189433 _R. H. Hardin_, Apr 22 2011