login
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
1
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
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
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 25 2012
STATUS
approved