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A250680 Number of (4+1)X(n+1) 0..3 arrays with nondecreasing x(i,j)+x(i,j-1) in the i direction and nondecreasing absolute value of x(i,j)-x(i-1,j) in the j direction 1
11736, 210158, 3107446, 41503790, 505108522, 5726252240, 61498698426, 632850763138, 6297768773474, 61000028098516, 578059653008102, 5380105017634102, 49331581021446126, 446710039295094002 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 4 of A250676

LINKS

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

EXAMPLE

Some solutions for n=1

..2..0....2..1....1..2....3..0....2..0....0..2....1..2....0..2....1..1....0..3

..0..2....3..0....3..0....3..0....2..1....0..2....3..0....2..0....2..0....1..2

..2..0....3..0....1..2....3..0....2..2....0..2....1..2....2..1....2..2....1..2

..1..3....3..0....2..1....2..1....2..3....0..2....2..1....2..1....1..3....2..1

..3..1....3..0....3..0....1..3....3..2....1..1....2..3....2..2....2..2....0..3

CROSSREFS

Sequence in context: A346276 A234863 A250695 * A045307 A229411 A235316

Adjacent sequences:  A250677 A250678 A250679 * A250681 A250682 A250683

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2014

STATUS

approved

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Last modified December 8 16:05 EST 2021. Contains 349596 sequences. (Running on oeis4.)