1044840976

Appears in sequences

• Number of nX3 0..2 arrays with every element neighboring horizontally or vertically both a 0 and a 1.at n=11A203537
• Number of (n+2)X2 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.at n=13A223646