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A232512 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 1
74, 250, 1730, 10118, 64290, 399122, 2523098, 15907690, 100603770, 636270550, 4026503762, 25483526018, 161305309394, 1021070935782, 6463641254302, 40917054779762, 259021102980902, 1639712263959994, 10380090197352550 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 5 of A232515
LINKS
FORMULA
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
EXAMPLE
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
CROSSREFS
Sequence in context: A204361 A204354 A223907 * A046833 A205754 A238022
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 25 2013
STATUS
approved

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Last modified July 20 20:50 EDT 2024. Contains 374459 sequences. (Running on oeis4.)