A208113 Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically

2, 16, 90, 625, 7315, 130321, 1432600, 17850625, 339961440, 8208541201, 137250396283, 2528484794641, 64191779662920, 1915940360359936, 43397063924977512, 1065586805357114881, 33367357471586657167

Offset

1,1

Comments

Diagonal of A208118

Links

R. H. Hardin, Table of n, a(n) for n = 1..38

Example

Some solutions for n=4
..1..1..0..0....0..1..1..1....0..1..1..1....1..1..0..1....0..1..1..0
..1..1..1..0....0..1..1..1....1..0..0..1....1..0..1..1....1..0..1..1
..1..1..0..0....0..1..1..1....0..1..1..1....1..0..0..1....0..1..1..0
..1..1..0..0....0..1..1..1....1..0..0..1....0..0..1..1....1..0..1..1

Crossrefs

Sequence in context: A253487 A207019 A207164 * A207448 A207362 A208008

Adjacent sequences: A208110 A208111 A208112 * A208114 A208115 A208116

Keyword

nonn

Author

R. H. Hardin Feb 23 2012

Status

approved