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A232587 Number of (n+1)X(6+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or antidiagonally, with no adjacent elements equal 1
70, 690, 8104, 93236, 1079300, 12486510, 144506106, 1672314806, 19353375198, 223972627480, 2591990800908, 29996594823464, 347144643738454, 4017436125487796, 46492991691492538, 538054174106467882 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 6 of A232589

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

FORMULA

Empirical: a(n) = 12*a(n-1) +9*a(n-2) -167*a(n-3) -12*a(n-4) +939*a(n-5) -314*a(n-6) -2754*a(n-7) +2190*a(n-8) +4330*a(n-9) -6045*a(n-10) -2542*a(n-11) +7749*a(n-12) -2051*a(n-13) -3957*a(n-14) +2749*a(n-15) +541*a(n-16) -459*a(n-17) -6*a(n-18) -169*a(n-19) -4*a(n-20) -40*a(n-21) -2*a(n-22) +4*a(n-23) for n>27

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A235488 A199829 A271495 * A027804 A212236 A177298

Adjacent sequences:  A232584 A232585 A232586 * A232588 A232589 A232590

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2013

STATUS

approved

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Last modified May 19 12:20 EDT 2022. Contains 353833 sequences. (Running on oeis4.)