A184565 Number of (n+2)X(n+2) 0..3 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order

14178, 993538, 57374460, 2943827443, 136680720320, 5891845723505, 236912838360594, 8847094859463950, 307617377912743450, 10100655820839334144, 321449766112998837176, 10305126469064160258992

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