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A219775 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 columns, 0..1 4Xn array 1
5, 8, 29, 100, 291, 771, 1887, 4278, 9072, 18147, 34592, 63333, 111962, 191826, 319428, 518191, 820642, 1271077, 1928772, 2871809, 4201590, 6048116, 8576112, 11992083, 16552390, 22572439, 30437080, 40612317, 53658434, 70244646, 91165388 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A219773

LINKS

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

FORMULA

Empirical: a(n) = (1/10080)*n^8 + (1/1680)*n^7 - (1/48)*n^6 + (41/120)*n^5 - (571/480)*n^4 - (593/240)*n^3 + (19457/252)*n^2 - (43041/70)*n + 1735 for n>9

EXAMPLE

Some solutions for n=3

..0..0..0....0..0..0....0..0..1....0..0..1....0..0..1....0..0..0....0..0..1

..0..0..0....0..0..1....0..0..0....0..0..1....0..0..1....0..0..0....0..0..0

..0..0..1....0..0..1....0..0..0....0..0..1....1..1..1....1..0..1....0..0..0

..0..0..1....1..0..0....0..0..1....0..0..1....1..1..1....1..1..1....0..0..0

CROSSREFS

Sequence in context: A026539 A126700 A076593 * A129774 A228472 A049373

Adjacent sequences:  A219772 A219773 A219774 * A219776 A219777 A219778

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 27 2012

STATUS

approved

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Last modified July 4 12:28 EDT 2022. Contains 355075 sequences. (Running on oeis4.)