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

170, 34988, 42534386, 333998523952, 15830978769561242, 4633149318453116653026, 8364724418212952351480546203, 92715859612444518806837176313688042

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