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A220040 Number of n X 4 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and nonincreasing columns, 0..3 n X 4 array. 1
20, 50, 848, 8337, 74547, 595862, 4640546, 35547836, 263385608, 1857934074, 12439748110, 79439449660, 486913051008, 2878634626483, 16468443715880, 91373937997461, 492567100876598, 2583758599155915, 13206265883717876 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A220044.
LINKS
EXAMPLE
Some solutions for n=3:
..2..1..0..1....2..0..0..0....0..0..0..0....2..2..0..1....1..0..0..0
..2..1..0..0....2..0..0..0....0..0..0..0....2..1..0..0....1..0..0..0
..2..2..0..0....2..3..2..3....1..1..0..1....2..1..0..0....3..3..0..3
CROSSREFS
Cf. A220044.
Sequence in context: A331753 A345124 A049390 * A128905 A276135 A350115
KEYWORD
nonn
AUTHOR
R. H. Hardin, Dec 03 2012
STATUS
approved

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Last modified June 18 03:29 EDT 2024. Contains 373468 sequences. (Running on oeis4.)