A185921 Number of (n+1)X4 0..3 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant

49342, 7232034, 1079255234, 160170012852, 23757227154988, 3524972742682648, 522964399238602036, 77588547894909110228, 11511228098599228957442, 1707835005432644412456998, 253378710999044741081140368

Offset

1,1

Comments

Column 3 of A185923

Links

R. H. Hardin, Table of n, a(n) for n = 1..89

Example

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

Crossrefs

Sequence in context: A253372 A204227 A205279 * A251912 A251910 A235172

Adjacent sequences: A185918 A185919 A185920 * A185922 A185923 A185924

Keyword

nonn

Author

R. H. Hardin Feb 06 2011

Status

approved