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A184565 Number of (n+2)X(n+2) 0..3 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order 1
14178, 993538, 57374460, 2943827443, 136680720320, 5891845723505, 236912838360594, 8847094859463950, 307617377912743450, 10100655820839334144, 321449766112998837176, 10305126469064160258992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A184574

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..15

EXAMPLE

Some solutions for 4X4

..0..0..0..0....0..0..0..2....0..0..0..2....0..0..0..0....0..0..0..0

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

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

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

CROSSREFS

Sequence in context: A104825 A184574 A184566 * A251068 A184559 A258532

Adjacent sequences:  A184562 A184563 A184564 * A184566 A184567 A184568

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 17 2011

STATUS

approved

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Last modified January 25 00:44 EST 2022. Contains 350565 sequences. (Running on oeis4.)