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A240890 Number of nX5 0..2 arrays with no element equal to a different number of vertical neighbors than horizontal neighbors, with new values 0..2 introduced in row major order 1
8, 116, 1485, 19065, 245268, 3146755, 40424861, 519218802, 6669141957, 85661208693, 1100266812500, 14132294288479, 181521187277681, 2331535718787322, 29947240904675409, 384655164983132569 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A240893

LINKS

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

FORMULA

Empirical: a(n) = 16*a(n-1) -22*a(n-2) -276*a(n-3) +543*a(n-4) +1114*a(n-5) -24150*a(n-6) -6509*a(n-7) +197916*a(n-8) +80150*a(n-9) -592045*a(n-10) +4684412*a(n-11) +15106341*a(n-12) -17190009*a(n-13) -90244020*a(n-14) -91211136*a(n-15) -290130772*a(n-16) -407134336*a(n-17) +671095240*a(n-18) +2173631712*a(n-19) +6313455104*a(n-20) +12278947872*a(n-21) +8033752064*a(n-22) +6113760384*a(n-23) -31674604288*a(n-24) -122704805888*a(n-25) -110531544064*a(n-26) -270879311872*a(n-27) -593695940608*a(n-28) +82971942912*a(n-29) +283392655360*a(n-30) -69979668480*a(n-31) +3328745078784*a(n-32) +4282541146112*a(n-33) +2076075098112*a(n-34) +9789286383616*a(n-35) +7759030386688*a(n-36) +1140229931008*a(n-37) +7107835330560*a(n-38) -2054940524544*a(n-39) -10791105331200*a(n-40) -2076616687616*a(n-41) -14566381584384*a(n-42) -20598663151616*a(n-43) -2336462209024*a(n-44) -13056700579840*a(n-45) -3848290697216*a(n-46) +3298534883328*a(n-47) -4398046511104*a(n-48)

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A156468 A293992 A220575 * A241105 A214695 A235338

Adjacent sequences:  A240887 A240888 A240889 * A240891 A240892 A240893

KEYWORD

nonn

AUTHOR

R. H. Hardin, Apr 14 2014

STATUS

approved

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Last modified January 29 04:57 EST 2020. Contains 331335 sequences. (Running on oeis4.)