90160

Appears in sequences

• Sum of the sizes of the tails below the Durfee squares of all partitions of n.at n=31A116365
• Number of ways to place 2 nonattacking nightriders on an n X n board.at n=20A172141
• Integers that are Rhonda numbers to base 30.at n=34A255736
• Lesser of amicable pair m < n defined by t(n) = m and t(m) = n where t(n) = psi(n) - n and psi(n) = A001615(n) is the Dedekind psi function.at n=33A323329