78004500

Appears in sequences

• Number of permutations in S_n with a certain property.at n=27A013498
• a(n) = C(n)*(8*n+1) where C(n) = Catalan numbers (A000108).at n=13A050478
• Sequence arising from enumeration of domino tilings of Aztec Pillow-like regions.at n=12A092443