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A204730 Number of (n+1)X7 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero 1

%I

%S 171860,10332706,108530190,6063334774,72313926190,3923500974342,

%T 49973876676266,2620184692100666,35147734420956234,

%U 1772864559414767572,24904244389253270250,1207168595561106330152,17696904425164366165232

%N Number of (n+1)X7 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero

%C Column 6 of A204732

%H R. H. Hardin, <a href="/A204730/b204730.txt">Table of n, a(n) for n = 1..44</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 18 2012

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Last modified October 24 13:06 EDT 2021. Contains 348231 sequences. (Running on oeis4.)