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A250957 Number of (n+1)X(n+1) 0..3 arrays with no 2X2 subblock having its minimum diagonal element less than its minimum antidiagonal element 1
170, 34988, 42534386, 333998523952, 15830978769561242, 4633149318453116653026, 8364724418212952351480546203, 92715859612444518806837176313688042 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Diagonal of A250965

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..9

EXAMPLE

Some solutions for n=2

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

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

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

CROSSREFS

Sequence in context: A178499 A133328 A098244 * A114048 A187704 A263059

Adjacent sequences:  A250954 A250955 A250956 * A250958 A250959 A250960

KEYWORD

nonn

AUTHOR

R. H. Hardin, Nov 29 2014

STATUS

approved

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Last modified May 21 14:54 EDT 2022. Contains 353921 sequences. (Running on oeis4.)