580320

Appears in sequences

• a(n) = ((2^b-1)/phi(n))*Sum_{d|n} Moebius(n/d)*d^(b-1) for b = 5.at n=19A160894
• Number of length n 0..1 arrays with each partial sum starting from the beginning no more than one standard deviation from its mean.at n=21A244781
• a(n) = n*(n + 1)*(n + 2)*(4*n - 3)/6.at n=30A264851
• Lesser of recursive amicable numbers pair: numbers m < k such that m = s(k) and k = s(m), where s(k) = A333926(k) - k is the sum of proper recursive divisors of k.at n=33A333929