585728

Appears in sequences

• Droll numbers: numbers > 1 whose sum of even prime factors equals the sum of odd prime factors.at n=29A019507
• a(n) = S1(n,1), where S1(n, t) = Sum_{k=0..n} (k^t * Sum_{j=0..k} binomial(n,j)).at n=13A089658
• Triangle T(n,k), n>=0, 0<=k<=C(n,2), read by rows: T(n,k) = number of k-length saturated chains in the poset of Dyck paths of semilength n ordered by inclusion.at n=40A193536
• T(n, k) = (3^(-k)*n!*2^(n - 3*k))/(k!*(n - 3*k)!), for n >= 0 and 0 <= k <= floor(n/3). Triangle read by rows.at n=36A344915
• Nonsquare integers >= 2 for which the square of its largest prime factor equals the sum of the squares of its other prime factors, with multiplicity.at n=16A391874