A233948 Number of (n+1)X(7+1) 0..2 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 4

780718, 144797048, 27781166008, 5586328225626, 1138816865389902, 234320529225491746, 48397283414008033460, 10019368734553550702208, 2076288413340940926824150, 430539542797104173397070614

Offset

1,1

Comments

Column 7 of A233949

Links

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

Example

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

Crossrefs

Sequence in context: A146953 A257757 A250690 * A204312 A237089 A206633

Adjacent sequences: A233945 A233946 A233947 * A233949 A233950 A233951

Keyword

nonn

Author

R. H. Hardin, Dec 18 2013

Status

approved