T(n,k)=Number of nX(k+1) 0..3 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.

A223751

T(n,k)=Number of nX(k+1) 0..3 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.

Terms

    a(0) =6a(1) =24a(2) =20a(3) =117a(4) =200a(5) =120a(6) =456a(7) =2826a(8) =4800a(9) =536a(10) =1962a(11) =26980a(12) =330642a(13) =74504a(14) =3378a(15) =7660a(16) =308268a(17) =12302880a(18) =21965901a(19) =1918704a(20) =17362a(21) =31897a(22) =2964940a(23) =604821816a(24) =2762855184a(25) =2810374281a(26) =37050508a(27) =108534a(28) =125240a(29) =31799477

External references