52656

Appears in sequences

• Pentanacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) + a(n-5), a(0)=a(1)=a(2)=a(3)=0, a(4)=1.at n=21A001591
• Expansion of e.g.f.: exp(2*(exp(exp(x/(1-x)) -1) -1)/(2 - exp(exp(x/(1-x) ) -1 ))).at n=5A123898
• Number of n X 2 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors.at n=7A283409
• T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors.at n=37A283415
• T(n,k)=Number of nXk 0..1 arrays with no 1 equal to more than three of its horizontal, vertical and antidiagonal neighbors.at n=43A283415
• Numbers k such that Bernoulli number B_{k} has denominator 46410.at n=11A295590
• a(n) = (n+1)*(n^4-4*n^3+11*n^2-8*n+12)/12.at n=15A302612
• Expansion of Product_{k>=1} (1 + x^sigma(k)) / (1 - x^sigma(k)).at n=39A333045
• Number of integer partitions that are the first sums of some integer partition of n > 0.at n=41A390429