A251382 Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock summing to 2 3 4 5 or 6

71, 12457, 16036923, 152031391763, 10607219852841053, 5446724008815493105583, 20584044969991357548445765971, 572515877737272494782187942247163209, 117194100380880848780139821932249983127330495

Offset

1,1

Comments

Diagonal of A251390

Links

Table of n, a(n) for n=1..9.

Example

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

Crossrefs

Sequence in context: A260034 A250974 A209952 * A208679 A220980 A033527

Adjacent sequences: A251379 A251380 A251381 * A251383 A251384 A251385

Keyword

nonn

Author

R. H. Hardin, Dec 01 2014

Status

approved