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A204626 Number of (n+1)X5 0..2 arrays with every 2X2 subblock having unequal diagonal elements or unequal antidiagonal elements, and new values 0..2 introduced in row major order 1
6144, 933462, 141832254, 21550390395, 3274427479938, 497525810748759, 75595484720747496, 11486192649538372653, 1745244733464500021670, 265177441526573391694167, 40291813604266663731304284 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A204630

LINKS

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

FORMULA

Empirical: a(n) = 165*a(n-1) -2025*a(n-2) +6241*a(n-3) -270*a(n-4) -17282*a(n-5) +5524*a(n-6) +11864*a(n-7) +1568*a(n-8)

EXAMPLE

Some solutions for n=3

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

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

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

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

CROSSREFS

Sequence in context: A152388 A251787 A203982 * A318251 A281265 A007992

Adjacent sequences:  A204623 A204624 A204625 * A204627 A204628 A204629

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2012

STATUS

approved

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Last modified October 22 08:00 EDT 2019. Contains 328315 sequences. (Running on oeis4.)