A186530 Number of (n+1)X4 0..2 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant

4020, 129762, 4456218, 150041994, 5043895240, 169733268904, 5709526227226, 192072734086538, 6461422817794236, 217365472732705214, 7312282796005760846, 245988850418456533510, 8275187693250816388800, 278381446241871054077996

Offset

1,1

Comments

Column 3 of A186536

Links

R. H. Hardin, Table of n, a(n) for n = 1..200

Example

Some solutions for 3X4
..1..0..2..1....1..1..1..0....1..1..2..1....0..1..0..1....0..1..2..0
..0..2..2..2....1..1..2..2....1..0..2..0....2..1..2..0....0..1..1..2
..2..0..2..0....0..1..0..0....1..1..1..2....2..1..1..2....1..0..1..0

Crossrefs

Sequence in context: A205889 A236521 A235658 * A124728 A251098 A034229

Adjacent sequences: A186527 A186528 A186529 * A186531 A186532 A186533

Keyword

nonn

Author

R. H. Hardin Feb 23 2011

Status

approved