264960

Appears in sequences

• Number of ways to choose n positive integers less than or equal to 2n such that none of the n integers divides another.at n=45A174094
• The number of sets of n positive integers strictly less than 2*n such that no integer in the set divides another.at n=45A192298
• The number of sets of n positive integers strictly less than 2*n such that no integer in the set divides another.at n=46A192298
• a(n) = n^2 * B(n) where B(n) are the Bell numbers, A000110.at n=8A204618
• Expansion of Product_{k=1..24} theta_3(q^k), where theta_3() is the Jacobi theta function.at n=46A320248