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 A209106 Number of 7Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors 1

%I

%S 365,254496,125526240,57113932788,25586970618660,11437585318270860,

%T 5112092569118325704,2285013663964828552960,1021387683873603848380972,

%U 456557468966590708568722520,204080223921705625484844604564

%N Number of 7Xn 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors

%C Row 7 of A209100

%H R. H. Hardin, <a href="/A209106/b209106.txt">Table of n, a(n) for n = 1..158</a>

%e Some solutions for n=4

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

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 05 2012

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Last modified August 14 03:03 EDT 2022. Contains 356109 sequences. (Running on oeis4.)