A222843 Number of (n+1)X2 0..2 arrays with every row and column least squares fitting to a positive slope straight line

1, 3, 16, 48, 185, 534, 1873, 5397, 17853, 51516, 165882, 480321, 1519997, 4419336, 13827716, 40372992, 125335640, 367166796, 1133563870, 3330422526, 10238553681, 30154137624, 92399944682, 272682432123, 833404227103, 2463640724667

Offset

1,2

Comments

Column 1 of A222847

Links

R. H. Hardin, Table of n, a(n) for n = 1..46

Example

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

Crossrefs

Sequence in context: A172482 A362007 A212564 * A346556 A004320 A089363

Adjacent sequences: A222840 A222841 A222842 * A222844 A222845 A222846

Keyword

nonn

Author

R. H. Hardin Mar 07 2013

Status

approved