A185775 Number of (n+1)X6 0..2 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum

186624, 14837270, 1154712762, 95851024672, 7861640359954, 641850855452998

Offset

1,1

Comments

Column 5 of A185777

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for 3X6
..0..0..1..2..0..0....0..0..1..2..1..2....0..0..2..2..0..0....0..0..1..2..2..2
..0..1..2..0..0..1....0..1..2..2..1..0....0..0..1..0..2..1....0..0..0..1..2..2
..0..1..2..0..0..1....0..1..1..1..0..2....0..1..0..0..0..2....0..1..1..1..0..1

Crossrefs

Sequence in context: A216901 A253293 A253163 * A046507 A151422 A250541

Adjacent sequences: A185772 A185773 A185774 * A185776 A185777 A185778

Keyword

nonn

Author

R. H. Hardin Feb 03 2011

Status

approved