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A250679 Number of (3+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
2512, 34630, 388916, 4008211, 38224684, 345255872, 2996016017, 25227877364, 207711004347, 1680947958659, 13425296521939, 106128580452188, 832257246775220, 6485280761219682, 50282187542669984, 388284093532906123 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Row 3 of A250676

LINKS

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

R. H. Hardin, Empirical recurrence of order 58K

FORMULA

Empirical recurrence of order 58 (see link above)

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A212400 A215197 A250694 * A145534 A166931 A131662

Adjacent sequences:  A250676 A250677 A250678 * A250680 A250681 A250682

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 26 2014

STATUS

approved

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Last modified August 8 11:31 EDT 2020. Contains 336298 sequences. (Running on oeis4.)