Number of (n+2)X5 0..1 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.
A223177
Number of (n+2)X5 0..1 arrays with all rows and columns having a strictly positive second derivative in a quadratic least squares fit.
Terms
- a(0) =0a(1) =40a(2) =2076a(3) =48316a(4) =620568a(5) =14777316a(6) =246091276a(7) =3081824360a(8) =43744483080a(9) =658808677292
External references
- oeis: A223177