191310

Appears in sequences

• Number of partitions of n with equal number of parts congruent to each of 1 and 2 (mod 3).at n=60A035536
• Number of partitions of 3n with same number of parts == 1 (mod 3) and == 2 (mod 3).at n=20A035592
• Number of polygons formed outside a regular n-gon when every pair of vertices of the n-gon are joined by an infinite line.at n=41A344311