A203594 Number of nX1 0..2 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other

3, 9, 18, 26, 26, 12, 98, 366, 796, 996, 534, 5366, 23308, 56516, 75120, 41600, 448400, 2053480, 5180820, 7049350, 3952950, 44504530, 210527016, 543851924, 750110424, 423385872, 4900761656, 23667951384, 62074790736, 86372858208, 48953570736

Offset

1,1

Comments

Column 1 of A203600

Links

R. H. Hardin, Table of n, a(n) for n = 1..86

Example

Some solutions for n=4
..1....0....1....1....2....1....1....2....0....1....0....1....2....0....2....1
..0....0....2....0....2....0....0....2....0....1....1....2....1....1....0....1
..0....2....0....0....0....0....0....1....1....0....2....2....0....2....1....2
..2....2....1....2....0....2....2....1....2....0....0....0....2....0....2....2

Crossrefs

Sequence in context: A210991 A112559 A030784 * A325751 A123877 A057681

Adjacent sequences: A203591 A203592 A203593 * A203595 A203596 A203597

Keyword

nonn

Author

R. H. Hardin Jan 03 2012

Status

approved