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A208869 Number of nX5 0..3 arrays with new values 0..3 introduced in row major order and no element equal to more than one of its immediate leftward or upward or right-upward antidiagonal neighbors 1
51, 24472, 14493405, 8624977114, 5134914951163, 3057224057476808, 1820216057105650386, 1083724145919960847502, 645230025599333921071976, 384158448692090971917060268, 228721088397696942173901117684 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A208872

LINKS

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

FORMULA

Empirical: a(n) = 698*a(n-1) -64930*a(n-2) +2349972*a(n-3) -40985428*a(n-4) +382137700*a(n-5) -2071312484*a(n-6) +7427716824*a(n-7) -22247002672*a(n-8) +65755191408*a(n-9) -163887803568*a(n-10) +277785052512*a(n-11) -285817496832*a(n-12) +164238606720*a(n-13) -46819296000*a(n-14) +4897760256*a(n-15) for n>16

EXAMPLE

Some solutions for n=4

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

..3..3..0..1..0....1..1..2..1..0....1..1..1..2..0....0..2..0..1..2

..1..2..1..2..0....2..3..1..3..3....2..0..2..0..1....1..1..3..1..0

..0..1..0..3..2....1..2..3..0..1....2..1..3..0..0....0..1..0..2..3

CROSSREFS

Sequence in context: A202886 A223059 A208861 * A208876 A208172 A200798

Adjacent sequences:  A208866 A208867 A208868 * A208870 A208871 A208872

KEYWORD

nonn

AUTHOR

R. H. Hardin Mar 02 2012

STATUS

approved

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Last modified July 2 16:14 EDT 2020. Contains 335404 sequences. (Running on oeis4.)