27165

Appears in sequences

• Sort then Add, a(1)=3.at n=14A033893
• a(1)=5, a(2)=3, a(n)=5*a(n-1) + 3*a(n-2).at n=6A189747
• The number of vertices inside a cross with width 3 and height n (see Comments in A331455 for definition) formed by the straight line segments mutually connecting all vertices and all points.at n=19A330850