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A205041 Number of (n+1)X4 0..6 arrays with the permanents of all 2X2 subblocks equal and nonzero 1

%I #5 Mar 31 2012 12:37:04

%S 25108,366378,2587806,30072178,256406852,2700120030,24602390018,

%T 249559797434,2340396036268,23389408831586,222527499358064,

%U 2210472308774864,21208217602779222,210157217608774748

%N Number of (n+1)X4 0..6 arrays with the permanents of all 2X2 subblocks equal and nonzero

%C Column 3 of A205046

%H R. H. Hardin, <a href="/A205041/b205041.txt">Table of n, a(n) for n = 1..183</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 21 2012

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Last modified April 24 14:32 EDT 2024. Contains 371960 sequences. (Running on oeis4.)