1420595

Appears in sequences

• Expansion of e.g.f.: sech(log(x+1)-sin(x))=1-3/4!*x^4+30/5!*x^5-180/6!*x^6+1113/7!*x^7...at n=11A013221
• Number of (1,0)-steps in all weighted lattice paths in L_n.at n=15A182887