547200

Appears in sequences

• Numbers that can be written as (a^2-1)(b^2-1) in three or more distinct ways.at n=9A134856
• Sequence A255412 sorted into ascending order, with duplicates removed.at n=29A254035
• a(n) = A000203(A255334(n)).at n=33A255412
• Triangle read by rows: T(n,k) is the number of permutations of length n that have k same elements at the same positions with its inverse permutation for 0 <= k <= n.at n=58A344901