29078

Appears in sequences

• Gaps of 2 in sequence A038593 (lower terms).at n=21A038643
• Numbers n such that z(n) and z(n+1) are both prime, where z(n) = a^d + b^d + c^d + ..., where a*b*c* ... is the prime factorization of n and d is the largest digit of n.at n=21A109280
• Numbers n such that n = x + y, sigma_1(n) = sigma_1(x) + sigma_1(y) and sigma_2(n) = sigma_2(x) + sigma_2(y).at n=18A219033
• Numbers such that sigma(phi(tau(n)))=tau(phi(sigma(n))).at n=24A226119
• a(n) is the least integer k such that there are n values of i <= k for which gpf(i^2 + 1) = gpf(k^2 + 1), where gpf(x) is the greatest prime factor of x.at n=31A258840
• Number of integer compositions of n whose leaders of strictly increasing runs are themselves strictly increasing.at n=33A374688