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A206251 Number of (n+1)X5 0..3 arrays with every 2X2 subblock having zero permanent 1

%I #5 Mar 31 2012 12:37:10

%S 9409,1718209,49336576,4556324929,226637884225,16533087493120,

%T 1006239668280961,68438717405988481,4427204221759169536,

%U 295306870252087238017,19431114832514090805121,1289257317404589497597440

%N Number of (n+1)X5 0..3 arrays with every 2X2 subblock having zero permanent

%C Column 4 of A206255

%H R. H. Hardin, <a href="/A206251/b206251.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 88*a(n-1) -128439*a(n-3) +1879848*a(n-4) +28773144*a(n-5) -593002863*a(n-6) +32230833768*a(n-8) -98419153113*a(n-9)

%e Some solutions for n=4

%e ..3..3..2..3..0....3..1..1..2..0....0..1..0..2..3....2..1..3..3..1

%e ..0..0..0..0..0....0..0..0..0..0....0..0..0..0..0....0..0..0..0..0

%e ..3..0..0..0..3....1..2..1..1..3....0..0..3..2..3....0..1..0..2..2

%e ..2..0..2..0..3....0..0..0..0..0....1..0..0..0..0....0..1..0..0..0

%e ..3..0..3..0..0....2..1..1..2..1....0..0..0..1..1....0..1..0..1..3

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 05 2012

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Last modified March 28 18:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)