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R. H. Hardin, <a href="/A232512/b232512.txt">Table of n, a(n) for n = 1..210</a>

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Number of (n+1)X(5+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally, diagonally or antidiagonally, with no adjacent elements equal

74, 250, 1730, 10118, 64290, 399122, 2523098, 15907690, 100603770, 636270550, 4026503762, 25483526018, 161305309394, 1021070935782, 6463641254302, 40917054779762, 259021102980902, 1639712263959994, 10380090197352550

1,1

Column 5 of A232515

Empirical: a(n) = 6*a(n-1) +10*a(n-2) -35*a(n-3) -84*a(n-4) -100*a(n-5) +131*a(n-6) +280*a(n-7) +161*a(n-8) -211*a(n-9) -243*a(n-10) -44*a(n-11) +85*a(n-12) -8*a(n-13) -20*a(n-14) -16*a(n-15) +6*a(n-16) +4*a(n-17) -a(n-18) for n>19

Some solutions for n=5

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

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

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

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

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

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

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R. H. Hardin, Nov 25 2013

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