cp's OEIS Frontend

A189453 Number of 5Xn array permutations with each element moving zero or one space horizontally or diagonally.

%I A189453 #7 Jul 22 2025 11:45:57
%S A189453 1,89,2000,80282,2735828,100047288,3586575040,129699382789,
%T A189453 4679106263313,168988854344569,6101461090647052,220326773309617717,
%U A189453 7955866427871519329,287286109553012636665,10373859878107656627776,374599289123263236521340
%N A189453 Number of 5Xn array permutations with each element moving zero or one space horizontally or diagonally.
%C A189453 Row 5 of A189449
%H A189453 R. H. Hardin, <a href="/A189453/b189453.txt">Table of n, a(n) for n = 1..200</a>
%e A189453 Some solutions for 5X3
%e A189453 ..1..5..2....0..5..2....0..2..1....0..1..2....1..5..2....0..5..2....0..2..1
%e A189453 ..3..0..4....4..3..1....7..8..5....7..5..4....3..0..4....4..3..1....3..4..5
%e A189453 ..7..6..8....7..6..8....6..3..4...10..3..8....6..8..7....7.11..8...10..7..8
%e A189453 ..9.11.10...10..9.11...13.11.10....9..6.11...10.14.11...13..6.10....9..6.11
%e A189453 .12.14.13...12.14.13...12..9.14...12.13.14...12..9.13...12..9.14...13.12.14
%K A189453 nonn
%O A189453 1,2
%A A189453 _R. H. Hardin_ Apr 22 2011