2891592224

Appears in sequences

• Number of city-block distance 1, pressure limit 2 movements in an n X n array with each element moving exactly one horizontally or vertically, no element acquiring more than two neighbors, and without 2-loops.at n=4A216984
• Number of city-block distance 1, pressure limit 2 movements in an nX5 array with each element moving exactly one horizontally or vertically, no element acquiring more than two neighbors, and without 2-loops.at n=4A216988
• T(n,k)=Number of city-block distance 1, pressure limit 2 movements in an nXk array with each element moving exactly one horizontally or vertically, no element acquiring more than two neighbors, and without 2-loops.at n=40A216991