The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A222854 Number of n X n 0..1 arrays with every row and column least squares fitting to a nonnegative slope straight line, with a single point array taken as having zero slope 0
 2, 6, 108, 2262, 452400, 113936464, 391515458264, 1332606996955912 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Diagonal of A222862 LINKS EXAMPLE Some solutions for n=3 ..1..0..1....0..1..0....0..1..0....0..0..1....0..1..0....0..0..1....0..0..0 ..1..1..1....1..1..1....0..1..0....1..0..1....0..1..0....0..0..1....0..0..1 ..1..0..1....0..1..0....0..1..0....1..0..1....0..1..1....1..0..1....0..0..0 CROSSREFS Sequence in context: A284262 A287935 A181036 * A059088 A216151 A057771 Adjacent sequences:  A222851 A222852 A222853 * A222855 A222856 A222857 KEYWORD nonn AUTHOR R. H. Hardin Mar 07 2013 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 30 19:15 EDT 2021. Contains 346359 sequences. (Running on oeis4.)