Number of (n+2)X6 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.
A223650
Number of (n+2)X6 0..1 arrays with all rows having a nonnegative second derivative, and all and columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.
Terms
- a(0) =207a(1) =3237a(2) =427313a(3) =22982345a(4) =1119629805a(5) =50246141433
External references
- oeis: A223650