2950334

Appears in sequences

• L.g.f.: -log(1 - Sum_{n>=1} x^(n*(n+1)/2)) = Sum_{n>=1} a(n)*x^n/n.at n=33A224678
• a(1)=a(2)=1, a(n) = ceiling(e*a(n-1) - a(n-2)) for n>2.at n=19A258898