A185927 Number of (n+1)X4 0..3 arrays with no 2X2 subblock trace equal to any horizontal or vertical neighbor 2X2 subblock trace

45184, 5113920, 590014464, 67954333216, 7826768593728, 901434253841216, 103822107190857792, 11957609765394118112, 1377207187583977926400, 158618585953786047231392, 18268752901619252768070528

Offset

1,1

Comments

Column 3 of A185933

Links

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

Example

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

Crossrefs

Sequence in context: A158931 A162894 A031851 * A287378 A163816 A055355

Adjacent sequences: A185924 A185925 A185926 * A185928 A185929 A185930

Keyword

nonn

Author

R. H. Hardin Feb 06 2011

Status

approved