A220928 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..3 nX4 array

20, 114, 1448, 15360, 149336, 1346477, 11432523, 90627413, 672437960, 4724581523, 31737220657, 204660108794, 1268432419949, 7564543799888, 43494599738604, 241678326267770, 1300626138728509, 6792490340804235, 34484471821861910

Offset

1,1

Comments

Column 4 of A220931

Links

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

Example

Some solutions for n=3
..1..1..0..0....1..1..2..2....1..1..1..2....0..0..1..2....0..0..0..2
..1..0..0..0....1..1..2..1....1..1..1..2....0..0..2..1....0..0..2..0
..1..0..0..2....1..3..1..1....1..1..3..3....0..0..1..1....1..3..0..0

Crossrefs

Sequence in context: A107837 A267843 A271494 * A206368 A258667 A357042

Adjacent sequences: A220925 A220926 A220927 * A220929 A220930 A220931

Keyword

nonn

Author

R. H. Hardin Dec 25 2012

Status

approved