A251498 Number of (n+1) X (7+1) 0..3 arrays with every 2 X 2 subblock summing to 4, 5, 6, 7 or 8.

631765770, 7568125133206, 93579182156013156, 1164234701633948131822, 14502622693639768776131804, 180705599017375127320670453920, 2251767738908429892914683045411296

Offset

1,1

Comments

Column 7 of A251499.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=1
..0..0..0..0..1..3..0..0....0..0..0..0..3..1..2..3....0..0..0..0..1..2..1..2
..1..3..2..2..1..0..3..2....2..2..2..2..1..1..0..1....3..3..2..2..3..1..2..2

Crossrefs

Cf. A251499.

Sequence in context: A123705 A237364 A371865 * A233848 A343077 A360306

Adjacent sequences: A251495 A251496 A251497 * A251499 A251500 A251501

Keyword

nonn

Author

R. H. Hardin, Dec 03 2014

Status

approved