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A202652 Number of 3X3 0..n arrays with no row or column sum equal to the previous 2
126, 8460, 143028, 1217196, 6835050, 29025832, 100804408, 300779112, 797002582, 1919734900, 4275569868, 8918598788, 17597763122, 33103533936, 59741213696, 103962922160, 175195148094, 286904314092, 457948263108, 714267962604 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A202651

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..33

FORMULA

Empirical: a(n) = 5*a(n-1) -6*a(n-2) -9*a(n-3) +24*a(n-4) -3*a(n-5) -26*a(n-6) +7*a(n-7) +18*a(n-8) +7*a(n-9) -26*a(n-10) -3*a(n-11) +24*a(n-12) -9*a(n-13) -6*a(n-14) +5*a(n-15) -a(n-16)

EXAMPLE

Some solutions for n=3

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

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

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

CROSSREFS

Sequence in context: A208618 A352334 A267835 * A278624 A156931 A075919

Adjacent sequences:  A202649 A202650 A202651 * A202653 A202654 A202655

KEYWORD

nonn

AUTHOR

R. H. Hardin Dec 22 2011

STATUS

approved

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Last modified May 22 22:13 EDT 2022. Contains 353959 sequences. (Running on oeis4.)