A251398 Number of (n+1) X (4+1) 0..3 arrays with no 2 X 2 subblock having the sum of its diagonal elements less than the absolute difference of its antidiagonal elements.

647154, 442476530, 301644677965, 205729518595782, 140311657486510902, 95695193651485137766, 65265944559607354012467, 44512625089074325076093620, 30358463245869796237858714204, 20705053555910102684134541106487

Offset

1,1

Comments

Column 4 of A251402.

Links

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

Example

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

Crossrefs

Cf. A251402.

Sequence in context: A253405 A034628 A014496 * A057847 A058327 A234160

Adjacent sequences: A251395 A251396 A251397 * A251399 A251400 A251401

Keyword

nonn

Author

R. H. Hardin, Dec 02 2014

Status

approved