55750

Appears in sequences

• Number of coprime chains with largest member prime(n).at n=35A003140
• Let s denote the sum of the deficient numbers in the aliquot parts of x. Sequence lists numbers x such that sigma(s) = usigma(x), where usigma(x) is the sum of the unitary divisors of x (A034448).at n=15A258134
• a(n) = A273059(4n+3).at n=41A275919
• Triangle read by rows: T(n,k) = number of permutations p of [n] such that max(|p(p(i)) - i|)=k (n>=1, 0<=k<=n-1).at n=41A364817