549997641

Appears in sequences

• a(1)=1; a(n)=sum(u=1,n-1,sum(v=1,u,sum(w=1,v,sum(x=1, w,sum(y=1,x,a(y)))))).at n=15A079675
• Expansion of 1/(1 - x - 2*x^3 - x^5).at n=37A193147