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A250675 Number of (n+1)X(7+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 2
3321772, 115965426, 2996016017, 61498698426, 1070591197687, 15971487229178, 210335029800118, 2486539928867930, 26773801460595558, 265593229627937954, 2450139707701747024, 21184357574916340526, 172798870644903483178 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A250676

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..27

EXAMPLE

Some solutions for n=1

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

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

CROSSREFS

Sequence in context: A186959 A186594 A244574 * A242608 A206511 A238153

Adjacent sequences:  A250672 A250673 A250674 * A250676 A250677 A250678

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2014

STATUS

approved

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Last modified August 14 01:55 EDT 2020. Contains 336476 sequences. (Running on oeis4.)