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A252915 Number of (n+2)X(3+2) 0..3 arrays with every consecutive three elements in every row having 2 or 3 distinct values, in every column 1 or 2 distinct values, in every diagonal 2 distinct values, and in every antidiagonal 2 distinct values, and new values 0 upwards introduced in row major order 1
90512, 566649, 5247300, 54457598, 606913688, 6778023822, 76682086492, 869698248167, 9878822337856, 112256468346214, 1276115781362754, 14507747043563015, 164948548762618549, 1875445243541415216 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A252917

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..29

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A204670 A236908 A270754 * A075007 A287383 A179732

Adjacent sequences:  A252912 A252913 A252914 * A252916 A252917 A252918

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 24 2014

STATUS

approved

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Last modified January 29 01:54 EST 2020. Contains 331328 sequences. (Running on oeis4.)