-13257

Appears in sequences

• Ooguri-Vafa invariants of disk degeneracies for brane I or brane II in the O(K) -> P^2 geometry.at n=5A061635
• a(n) = - 6*a(n-1) - 9*a(n-2) - 3*a(n-3) with a(0)=3, a(1)=-6, a(2)=18.at n=7A215634