Number of (n+2)X7 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.
A223651
Number of (n+2)X7 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) =513a(1) =16975a(2) =4854187a(3) =502081983a(4) =47882329200
External references
- oeis: A223651