492032

Appears in sequences

• Generalized class numbers c_(n,2).at n=14A000362
• a(n) = n^2*(n+1)^2/2.at n=31A163102
• "Late birds" in A390939: terms A390939(m) such that A390939(k) > A390939(m) for all k > m, where A390939 lists the keys added in the map initialized with T[1] = 1 and then repeatedly T[v] := k + (T[v] if defined else 0) for all key-value pairs (k, v) in T.at n=25A390941