A222784 T(n,k)=Number of (n+3)X(k+3) 0..1 arrays with every row and column least squares fitting to a positive slope straight line

6, 36, 36, 696, 432, 696, 3960, 19488, 19488, 3960, 44092, 213840, 2044976, 213840, 44092, 245952, 5246948, 49904176, 49904176, 5246948, 245952, 2148348, 56568960, 2894017810, 2293746012, 2894017810, 56568960, 2148348, 11909916, 1048393824

Offset

1,1

Comments

Table starts

........6..........36...........696...........3960..........44092

.......36.........432.........19488.........213840........5246948

......696.......19488.......2044976.......49904176.....2894017810

.....3960......213840......49904176.....2293746012...279998448898

....44092.....5246948....2894017810...279998448898.79930489440470

...245952....56568960...69610779784.12671662224780

..2148348..1048393824.3021525433588

.11909916.11290600368

.92914316

Links

R. H. Hardin, Table of n, a(n) for n = 1..49

Example

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

Crossrefs

Sequence in context: A330681 A070400 A222929 * A043063 A348384 A328466

Adjacent sequences: A222781 A222782 A222783 * A222785 A222786 A222787

Keyword

nonn,tabl

Author

R. H. Hardin Mar 05 2013

Status

approved