A222966 Number of n X 5 0..1 arrays with every row least squares fitting to a positive-slope straight line and every column least squares fitting to a zero- or positive-slope straight line, with a single point array taken as having zero slope.

12, 48, 576, 3140, 37680, 264384, 3441888, 27387944, 361269072, 3225928864, 42721628400, 406849454892, 5367772345392, 53623428017220, 702878396190336, 7266377873987616, 94437176916813264, 1001872830089699424

Offset

1,1

Links

R. H. Hardin, Table of n, a(n) for n = 1..21

Example

Some solutions for n=3:
  0 0 0 1 1    0 1 0 0 1    0 0 0 1 1    0 0 1 1 1
  0 1 0 1 1    0 1 0 1 1    1 0 0 1 1    0 0 1 0 1
  0 0 0 1 1    0 1 1 1 1    0 0 1 1 1    0 1 1 1 1

Crossrefs

Column 4 of A222969.

Sequence in context: A269030 A222359 A002899 * A077612 A041272 A022282

Adjacent sequences: A222963 A222964 A222965 * A222967 A222968 A222969

Keyword

nonn

Author

R. H. Hardin, Mar 10 2013

Status

approved