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A204761 Number of (n+1)X7 0..5 arrays with the permanents of all 2X2 subblocks equal and nonzero 1

%I #5 Mar 31 2012 12:37:03

%S 469999,57594105,544806119,68057441183,700833744055,88406706477089,

%T 953004580935007,117779082753141157,1325384683873535315,

%U 158219359571601922795,1857180089870784997349,213203608279550415545503

%N Number of (n+1)X7 0..5 arrays with the permanents of all 2X2 subblocks equal and nonzero

%C Column 6 of A204763

%H R. H. Hardin, <a href="/A204761/b204761.txt">Table of n, a(n) for n = 1..19</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 18 2012

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Last modified August 13 01:27 EDT 2024. Contains 375113 sequences. (Running on oeis4.)