22778

Appears in sequences

• Powers of fifth root of 23 rounded down.at n=16A018180
• Numbers whose set of base-12 digits is {1,2}.at n=37A032932
• Number of equilateral triangles bounded by the sides and diagonals of a regular 3n-gon.at n=13A238822
• The number of edges 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=14A330851
• a(n) is the least k such that, if p is the greatest prime less than k, there is a prime between n*p and n*k, but for 1 < j < n there is no prime between j*p and j*k.at n=12A368208