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A189655 Number of 7Xn array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally 1

%I #5 Mar 31 2012 12:36:16

%S 1,6272,1180167,1598901325,1113666564608,1104421532180261,

%T 958681588788944613,890636373071604964608,805563236027350658919747,

%U 738517619493670317553084705,673437704833463142294374124032

%N Number of 7Xn array permutations with each element moving zero or one space horizontally, diagonally or antidiagonally

%C Row 7 of A189650

%H R. H. Hardin, <a href="/A189655/b189655.txt">Table of n, a(n) for n = 1..65</a>

%e Some solutions for 7X3

%e ..0..1..2....0..1..2....0..1..2....0..1..2....0..1..2....0..1..2....0..1..2

%e ..3..6..5....4..6..5....3..5..4....3..6..5....3..4..5....3..6..5....4..3..5

%e ..4..8.10...10..3..7....6..9..8....7..8..4....7..6..8....4.11..8....6..8..7

%e ..9.11..7....9..8.11....7.11.10...10.11.13...10..9.11...13.12..7...10.12.11

%e .12.14.13...16.17.14...12.13.14...12..9.16...12.14.13...10..9.14...13..9.14

%e .16.15.17...13.12.19...16.17.19...15.14.19...19.15.17...15.17.16...16.20.17

%e .19.18.20...18.15.20...18.15.20...18.17.20...18.20.16...19.18.20...18.15.19

%K nonn

%O 1,2

%A _R. H. Hardin_ Apr 24 2011

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Last modified April 19 11:14 EDT 2024. Contains 371791 sequences. (Running on oeis4.)