A234120 - OEIS

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A234120

Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.

67489, 10041953, 1458813409, 214027901025, 31446640848897, 4625943683805313, 680845368964238145, 100232847106041668353, 14757962542814417545441, 2173049645779146516000801, 319982366490305655551327777

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

COMMENTS

Column 6 of A234122

LINKS

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

FORMULA

Empirical: a(n) = 261*a(n-1) -18560*a(n-2) +127208*a(n-3) +23755242*a(n-4) -406238978*a(n-5) -11768024848*a(n-6) +211536189168*a(n-7) +3167620020453*a(n-8) -43174324632265*a(n-9) -498144039526280*a(n-10) +3974314857666608*a(n-11) +43883259123774428*a(n-12) -167685268616512940*a(n-13) -2040900846762609856*a(n-14) +3445445946343381888*a(n-15) +52296679884037531065*a(n-16) -35833370093864352573*a(n-17) -776126649677016939696*a(n-18) +226412171176325558120*a(n-19) +6916149301019844647706*a(n-20) -1682665179571062843826*a(n-21) -37312103086122262303664*a(n-22) +14659167338730178934224*a(n-23) +117646777156101371452739*a(n-24) -76253461020753171154783*a(n-25) -192817994631326898576392*a(n-26) +189380280584489465020224*a(n-27) +110172317785328612275008*a(n-28) -187529085888044105270592*a(n-29) +38102718853877138892864*a(n-30) +32573701148082394908672*a(n-31) -13221821267594299551744*a(n-32) -630264421714516770816*a(n-33) +672250225845986131968*a(n-34) -28475524214125756416*a(n-35)

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A226529 A198537 A249208 * A101697 A247221 A224655

Adjacent sequences: A234117 A234118 A234119 * A234121 A234122 A234123

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 19 2013

STATUS

approved