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 A189276 Number of nX5 array permutations with each element not moved or moved diagonally or antidiagonally by one 1

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

%S 1,64,1125,29241,670480,15594601,361199937,8366395024,193788877917,

%T 4488512569321,103963620831296,2408013388109169,55774648500091873,

%U 1291857814182989824,29922137343175603701,693059476202859612025

%N Number of nX5 array permutations with each element not moved or moved diagonally or antidiagonally by one

%C Column 5 of A189280

%H R. H. Hardin, <a href="/A189276/b189276.txt">Table of n, a(n) for n = 1..200</a>

%F Empirical: a(n) = 25*a(n-1) -1067*a(n-3) +1111*a(n-4) +19248*a(n-5) -37086*a(n-6) +40374*a(n-7) -18000*a(n-8) -44874*a(n-9) +111258*a(n-10) -91872*a(n-11) +9999*a(n-12) -13743*a(n-13) -891*a(n-15) -81*a(n-16)

%e Some solutions for 3X5

%e ..0..1..8..7..4....0..5..2..7..8....0..1..8..3..4....0..5..8..7..4

%e .11..2..3.12.13....1..6..3..4.13....5.12.13..2..9....1..2..3.12..9

%e .10..5..6..9.14...10.11.12..9.14...10.11..6..7.14...10.11..6.13.14

%K nonn

%O 1,2

%A _R. H. Hardin_ Apr 19 2011

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Last modified September 29 20:01 EDT 2023. Contains 365777 sequences. (Running on oeis4.)