Number of (n+2)X3 0..3 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.
A223158
Number of (n+2)X3 0..3 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.
Terms
- a(0) =2218a(1) =55790a(2) =2077712a(3) =68181369a(4) =1978616080a(5) =57277247088
External references
- oeis: A223158