1596800

Appears in sequences

• Solution to the Dancing School Problem with 13 girls and n+13 boys: f(13,n).at n=4A079918
• Solution to the Dancing School Problem with n girls and n+4 boys: f(n,4).at n=12A079923
• a(n) = Sum_{k=0..floor(n/3)} 2^k * 3^(n-3*k) * binomial(2*k,2*(n-3*k)).at n=21A390619