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A185563 1/4 the number of nX5 0..3 arrays with no element equal both to the element above and to the element to its left 1
256, 202500, 159749820, 126017211780, 99407416968000, 78416544382742160, 61858104930689319360, 48796145962555619907720, 38492350573406180494467240, 30364304873646611423433030660, 23952577505016018447231455650500 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 5 of A185567

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..169

FORMULA

Empirical: a(n)=829*a(n-1)-32339*a(n-2)+525706*a(n-3)-4547088*a(n-4)+22231638*a(n-5)-58780485*a(n-6)+68179725*a(n-7)-10661625*a(n-8)

EXAMPLE

Some solutions for 3X5 with a(1,1)=0

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

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

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

CROSSREFS

Sequence in context: A185924 A013997 A118056 * A220302 A013833 A100636

Adjacent sequences:  A185560 A185561 A185562 * A185564 A185565 A185566

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified January 25 17:14 EST 2022. Contains 350572 sequences. (Running on oeis4.)