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A222338 Number of nX5 0..6 arrays with no entry increasing mod 7 by 6 rightwards or downwards, starting with upper left zero 2

%I #4 Feb 15 2013 11:43:20

%S 1296,5541126,23691810366,101297497221786,433110977725751106,

%T 1851823828949372226486,7917720099292335726179166,

%U 33853269728349231756633211146,144744175965862513604773406152386

%N Number of nX5 0..6 arrays with no entry increasing mod 7 by 6 rightwards or downwards, starting with upper left zero

%C Column 5 of A222340

%H R. H. Hardin, <a href="/A222338/b222338.txt">Table of n, a(n) for n = 1..73</a>

%F Empirical: a(n) = 4726*a(n-1) -1996686*a(n-2) +308276506*a(n-3) -18629904781*a(n-4) +185850985068*a(n-5) +13276501451568*a(n-6) -66007323700200*a(n-7)

%e Some solutions for n=3

%e ..0..0..3..4..1....0..0..3..0..2....0..0..3..6..1....0..0..4..5..3

%e ..0..0..0..0..4....0..0..0..1..4....0..0..0..3..5....0..0..0..3..3

%e ..0..0..0..0..5....0..0..0..4..4....0..0..0..3..3....0..0..0..5..0

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 15 2013

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Last modified April 25 16:42 EDT 2024. Contains 371989 sequences. (Running on oeis4.)