A205765 Number of (n+1)X6 0..3 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors

462040, 77757894, 14312320196, 2656185934184, 492612437238998, 91342751431917271, 16933907492912073872, 3139181759928267573682, 581918239365879746359719, 107870252944691557966360427

Offset

1,1

Comments

Column 5 of A205768

Links

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

Example

Some solutions for 5X5
..2..0..3..1..2..0....2..1..1..2..2..0....1..1..1..2..0..2....1..1..0..1..0..1
..2..1..0..2..3..1....3..3..1..1..2..2....0..1..2..2..2..2....2..1..1..1..1..1
..3..2..1..3..1..0....3..1..1..2..2..0....1..1..1..2..3..2....3..1..2..1..2..1
..2..1..3..1..3..2....3..3..1..1..2..2....3..1..2..2..2..2....0..1..1..1..1..1
..3..2..1..3..2..3....2..3..3..1..1..2....0..1..1..2..3..0....1..1..2..0..1..2

Crossrefs

Sequence in context: A114671 A270856 A295475 * A216068 A237964 A251980

Adjacent sequences: A205762 A205763 A205764 * A205766 A205767 A205768

Keyword

nonn

Author

R. H. Hardin Jan 30 2012

Status

approved