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A204523 Number of (n+2)X4 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..3 introduced in row major order 1

%I

%S 99975,6099132,410928067,21954021414,1313498195386,82886770772555,

%T 4890159721211038,294294300117964072,18042431883156922320,

%U 1087890222088303122556,65748461084953303391874

%N Number of (n+2)X4 0..3 arrays with every 3X3 subblock having three equal elements in a row horizontally, vertically, diagonally or antidiagonally exactly one way, and new values 0..3 introduced in row major order

%C Column 2 of A204525

%H R. H. Hardin, <a href="/A204523/b204523.txt">Table of n, a(n) for n = 1..50</a>

%e Some solutions for n=3

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 15 2012

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Last modified July 5 00:01 EDT 2020. Contains 335457 sequences. (Running on oeis4.)