Number of (n+2)X3 0..2 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.
A223155
Number of (n+2)X3 0..2 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.
Terms
- a(0) =99a(1) =989a(2) =16089a(3) =215563a(4) =2616383a(5) =31465359a(6) =363006521a(7) =3765617353a(8) =43008488235a(9) =509667805085
External references
- oeis: A223155