A219717 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array

35, 129, 1860, 23506, 223069, 1797459, 13042996, 88520416, 572342438, 3549657187, 21174307247, 121698670540, 675451951704, 3628717162080, 18908602544387, 95732083571470, 471623541840462, 2263984217906734, 10603577016473376

Offset

1,1

Comments

Row 4 of A219714

Links

R. H. Hardin, Table of n, a(n) for n = 1..93

Example

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

Crossrefs

Sequence in context: A344013 A225930 A209370 * A220481 A144492 A192926

Adjacent sequences: A219714 A219715 A219716 * A219718 A219719 A219720

Keyword

nonn

Author

R. H. Hardin Nov 26 2012

Status

approved