A187354 Number of (n+2)X3 0..3 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum

5056, 7776, 440192, 2332924, 52776112, 460096436, 7500948108, 81056245820, 1156120104976, 13724956896132, 184898111031588, 2289480339888852, 30076021725983316, 379711139922795776, 4931568342034316252

Offset

1,1

Comments

Column 1 of A187356

Links

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

Example

Some solutions for 4X3
..3..0..3....1..0..0....2..2..0....0..0..3....1..1..2....2..2..1....1..1..3
..2..2..2....0..3..1....2..0..3....3..3..1....1..1..1....2..1..3....1..2..0
..3..0..3....1..0..0....2..1..2....0..1..1....3..0..2....2..2..1....1..2..1
..3..1..3....0..3..1....3..0..2....3..2..3....0..1..2....1..2..2....0..2..1

Crossrefs

Sequence in context: A155145 A281679 A187356 * A160757 A046169 A209782

Adjacent sequences: A187351 A187352 A187353 * A187355 A187356 A187357

Keyword

nonn

Author

R. H. Hardin Mar 08 2011

Status

approved