Stamp folding $s(3)$
Robert Dickau, via Wikimedia Commons. CC BY-SA 3.0.
The number of distinct ways to fold a strip of $3$ labeled stamps.
Value: $6$
Updates
-
Lower bound: $6$
Reference unknown
[via Number of ways of folding a strip of n labeled stamps. - OEIS] -
Upper bound: $6$
Reference unknown
[via Number of ways of folding a strip of n labeled stamps. - OEIS]