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A189446 Number of nX6 array permutations with each element moving zero or one space horizontally or diagonally 1

%I #5 Mar 31 2012 12:36:15

%S 13,841,40106,2008890,100047288,4982424404,248187289625,

%T 12362821462925,615823316590381,30675714678416140,1528034812741010509,

%U 76115272823689573050,3791493955944999761482,188863888740455537178552

%N Number of nX6 array permutations with each element moving zero or one space horizontally or diagonally

%C Column 6 of A189449

%H R. H. Hardin, <a href="/A189446/b189446.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n) = 55*a(n-1) -257*a(n-2) -66*a(n-3) -558*a(n-4) +20414*a(n-5) -105459*a(n-6) +187369*a(n-7) -105459*a(n-8) +20414*a(n-9) -558*a(n-10) -66*a(n-11) -257*a(n-12) +55*a(n-13) -a(n-14) for n>15

%e Some solutions for 3X6

%e ..0..2..1..4.11..5....1..0..2..3..4..5....0..1..3..2.11..5....1..0..9..2..5..4

%e ..6..7..9..8..3.10....6..7.15.16.17.11...13.14..7..8.17..4....6.14.15.10..3.11

%e .12.13.14.15.17.16...12.13.14..8..9.10...12..6.15.16..9.10...12.13..7..8.16.17

%K nonn

%O 1,1

%A _R. H. Hardin_ Apr 22 2011

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Last modified April 25 03:15 EDT 2024. Contains 371964 sequences. (Running on oeis4.)