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A250532 Number of (n+1)X(4+1) 0..3 arrays with nondecreasing max(x(i,j),x(i,j-1)) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction 1
21326, 289035, 3091263, 28135982, 226449945, 1660642705, 11375090117, 73739279943, 459022341499, 2761125746280, 16191268966687, 92865194391622, 523878250294449, 2912236729173199, 16012243734396908, 87174468796623908 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 4 of A250536
LINKS
EXAMPLE
Some solutions for n=1
..1..1..3..1..1....1..0..0..2..2....0..0..0..0..2....0..0..0..2..2
..0..3..1..3..1....0..1..1..3..2....2..2..3..2..1....1..1..3..2..3
CROSSREFS
Sequence in context: A254392 A253980 A349508 * A234454 A319017 A286635
KEYWORD
nonn
AUTHOR
R. H. Hardin, Nov 24 2014
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)