Map folding ($2 \times 13)$
The number of distinct ways to fold a $2 \times 13$ rectangle into a unit square.
Value: $1429703548$ (1,429,703,548)
Updates
-
Lower bound: $1429703548$
(1,429,703,548)
Reference unknown
[via Number of ways of folding a 2 X n strip of stamps. - OEIS] -
Upper bound: $1429703548$
(1,429,703,548)
Reference unknown
[via Number of ways of folding a 2 X n strip of stamps. - OEIS]