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A290648
a(n) is the smallest number of faces of the triangular lattice required to enclose an area consisting of exactly n faces.
1
6, 12, 14, 16, 18, 19, 18, 20, 22, 23, 22
OFFSET
0,1
FORMULA
Conjecture: a(n) = 2*A067628(n) + 6.
CROSSREFS
Triangular version of A235382.
Sequence in context: A306999 A246048 A348251 * A336549 A136155 A315599
KEYWORD
nonn,more
AUTHOR
Christian Majenz, Aug 08 2017
STATUS
approved