Number of (n+2)X2 0..2 arrays with all rows having a nonnegative second derivative, and all 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.
A223389
Number of (n+2)X2 0..2 arrays with all rows having a nonnegative second derivative, and all 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) =121a(1) =961a(2) =11025a(3) =116964a(4) =1089936a(5) =9979281a(6) =94770225a(7) =801003204a(8) =7591462641a(9) =69950728324a(10) =621964090609
External references
- oeis: A223389