A290648 a(n) is the smallest number of faces of the triangular lattice required to enclose an area consisting of exactly n faces.

6, 12, 14, 16, 18, 19, 18, 20, 22, 23, 22

Offset: 0

Author

Christian Majenz, Aug 08 2017

Keywords

• nonn
• more

Crossrefs

Triangular version of A235382.

Formula

Conjecture: a(n) = 2*A067628(n) + 6.