A219942 Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or diagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 4Xn array

35, 208, 2030, 21512, 173951, 1301292, 9073439, 59354249, 365947610, 2145444485, 12046595329, 65110996049, 339811990839, 1716295058005, 8405359988724, 39985660051195, 185069683334563, 834585631383453, 3671657062820420

Offset

1,1

Comments

Row 4 of A219939

Links

R. H. Hardin, Table of n, a(n) for n = 1..98

Example

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

Crossrefs

Sequence in context: A341043 A219831 A184200 * A232713 A007329 A345655

Adjacent sequences: A219939 A219940 A219941 * A219943 A219944 A219945

Keyword

nonn

Author

R. H. Hardin Dec 01 2012

Status

approved