125512

Appears in sequences

• Expansion of e.g.f. arcsin(arcsin(x) * exp(x)).at n=8A012317
• Expansion of 2*(2*x+1)/((x+1)*(sqrt(4*x+1)+1)).at n=12A104496
• Sum of the lengths of the second ascents in all Dyck paths of semilength n+2.at n=9A114277