164016
domain: N
Appears in sequences
- Number of equilateral triangles formed by triples of points taken from a hexagonal chunk of side n in the hexagonal lattice.at n=17A008893
- a(n) = 2025*n^2 - n.at n=8A156855
- Primitive terms of A388022: numbers k that satisfy sigma(k) AND 3*k = 3*k, but none of whose proper divisors satisfy the same condition.at n=28A388025