A220200 Number of nX4 arrays of the minimum value of corresponding elements and their horizontal, vertical or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 nX4 array

20, 89, 956, 6855, 44886, 303148, 2089805, 14021160, 88828793, 530514956, 3025654183, 16666381611, 89072121670, 462114159737, 2327673032529, 11394626760089, 54291971399557, 252137513999724, 1142599192201196

Offset

1,1

Comments

Column 4 of A220204

Links

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

Example

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

Crossrefs

Sequence in context: A234258 A213839 A264302 * A242656 A264851 A345286

Adjacent sequences: A220197 A220198 A220199 * A220201 A220202 A220203

Keyword

nonn

Author

R. H. Hardin Dec 07 2012

Status

approved