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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

(list; graph; refs; listen; history; text; internal format)

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