A185492 Number of (n+1)X5 binary arrays with every 2X2 subblock sum equal to some horizontal or vertical neighbor 2X2 subblock sum

160, 3792, 59384, 1020072, 17217132, 294899588, 5020204316, 85864759616, 1465390598424, 25047911812192, 427817986674120, 7310912481712556, 124902386267052984, 2134247440666874192, 36465326357492615132

Offset

1,1

Comments

Column 4 of A185497

Links

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

Example

Some solutions for 4X5
..1..1..1..1..0....0..1..0..0..1....1..0..1..0..1....0..1..1..0..0
..0..1..1..1..1....1..1..1..1..1....0..1..0..0..0....1..1..0..1..1
..1..1..0..0..1....0..0..0..0..1....0..0..0..0..0....0..0..0..0..0
..0..0..1..1..0....1..0..1..1..0....1..1..1..1..1....1..1..1..1..1

Crossrefs

Sequence in context: A188306 A189351 A168527 * A233909 A035825 A183769

Adjacent sequences: A185489 A185490 A185491 * A185493 A185494 A185495

Keyword

nonn

Author

R. H. Hardin Jan 29 2011

Status

approved