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R. H. Hardin, <a href="/A236996/b236996.txt">Table of n, a(n) for n = 1..210</a>

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Number of (n+1)X(7+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one

640000, 30233088, 1406076928, 80675315712, 4279521280000, 219711187058688, 11244238474313728, 700611776439386112, 40435085627883520000, 2290196951375479308288, 131119070760867387670528

1,1

Column 7 of A236997

Empirical: a(n) = 140*a(n-1) -6176*a(n-2) +87040*a(n-3) +21476352*a(n-4) -3006689280*a(n-5) +132637949952*a(n-6) -1869301678080*a(n-7) -149335861886976*a(n-8) +20907020664176640*a(n-9) -922298283013963776*a(n-10) +12998193418642391040*a(n-11) +331760110214840320000*a(n-12) -46446415430077644800000*a(n-13) +2048950440686853816320000*a(n-14) -28876399993099701452800000*a(n-15)

Some solutions for n=1

..0..0..2..0..0..0..0..2....0..0..1..1..0..1..2..0....0..0..0..1..0..0..2..2

..1..2..2..1..1..2..0..1....0..2..0..0..0..1..1..1....0..2..1..2..2..2..1..1

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nonn

R. H. Hardin, Feb 02 2014

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