260040

Appears in sequences

• Expansion of e.g.f.: cos(exp(x)-sec(x))=1-1/2!*x^2-3/4!*x^4+20/5!*x^5+3/6!*x^6...at n=11A013332
• a(n) = 289*n^2 - 2*n.at n=29A158252
• Maximally refined partitions into distinct parts (of any natural number) with n parts.at n=22A179817
• Number of Grand Dyck-Motzkin paths of length n.at n=14A256943
• a(n) = Sum_{k=0..n} binomial(4*k+2,k).at n=6A389471