77970

Appears in sequences

• Class numbers associated with terms of A001990.at n=28A001991
• Triangle T(n, k) = Number of non-equivalent (mod D_4) ways to arrange k indistinguishable points on an n X n square grid so that no three of them are collinear. Triangle read by rows.at n=35A235453
• Number of non-equivalent (mod D_4) ways to arrange 6 points on an n X n square grid so that no three points are collinear.at n=3A235457