29348

Appears in sequences

• Sum_{k<=n} (sigma(k)^2), where sigma(k) denotes the sum of the divisors of k A000203.at n=30A072379
• Starts for strings of at least five consecutive nonsquarefree numbers.at n=17A078144
• Maximum value taken on by f(P) = Sum_{i=1..n} p(i)*p(n+1-i) as {p(1),p(2),...,p(n)} ranges over all permutations P of {1,2,3,...,n}.at n=44A087035
• a(n) is the first term in a length n sequence of consecutive integers that are divisible respectively by the square of the first n primes.at n=3A248331
• Numbers k such that (73*10^k + 143)/9 is prime.at n=27A272193
• Edge count of the n X n white bishop graph.at n=44A289179
• a(n) = Sum_{i=1..n} sigma(i)*sigma(i+1), where sigma(n) = A000203(n) is the sum of the divisors of n.at n=31A330322