A203634 Number of nX4 0..1 arrays with the counts of all possible adjacent horizontal and vertical pair sum values being within one of each other

2, 6, 52, 154, 3824, 34648, 103690, 3172388, 30964178, 98045292, 3119147226, 31498645552, 102942841550, 3339440847942, 34385625760552, 114418767377664, 3757962051630128, 39182005442010990, 131941830464243716

Offset

1,1

Comments

Column 4 of A203638

Links

R. H. Hardin, Table of n, a(n) for n = 1..48

Example

Some solutions for n=5
..0..0..0..0....0..1..1..1....1..1..1..0....0..1..0..1....0..0..1..1
..0..0..1..0....0..1..1..1....1..1..1..1....0..0..0..1....0..0..1..1
..0..0..1..0....0..0..0..1....0..1..0..1....0..0..0..1....0..0..0..0
..1..1..1..1....0..0..0..1....0..0..0..1....0..1..1..1....1..0..1..1
..0..1..1..1....0..1..0..1....0..0..0..0....1..1..1..1....1..1..1..1

Crossrefs

Sequence in context: A108905 A247383 A298994 * A027263 A320453 A277477

Adjacent sequences: A203631 A203632 A203633 * A203635 A203636 A203637

Keyword

nonn

Author

R. H. Hardin Jan 04 2012

Status

approved