33089

Appears in sequences

• a(n) = Sum[Sum[(i+j)!/i!/j!,{i,1,j}],{j,1,n}].at n=7A120279
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 613", based on the 5-celled von Neumann neighborhood.at n=30A273243
• (Number of 4 X 4 pandiagonal magic squares with distinct positive entries less than n)/384.at n=33A317252
• Dirichlet g.f.: Product_{k>=2} 1 / (1 - k^(-s))^(2^(k - 1)).at n=15A329800
• Expansion of g.f. (Sum_{i>=0} (i! - 1)*x^i)/(Sum_{i>=0} i!*x^i).at n=8A387674