37031

Appears in sequences

• Number of n-celled diagonally symmetric polyominoes without holes.at n=20A056881
• a(n) = 70*n^2 + 1.at n=23A158734
• Triangle T(n,k) read by rows: the number of semigroups of orientation-preserving partial transformations on n element with right waist k.at n=34A289714