44835

Appears in sequences

• Triangle of generalized Stirling numbers of the first kind.at n=60A094645
• Take pairs (a, b), sorted on a, such that T(a)+T(b)=concatenation of a and b, where T(k) is the k-th triangular number A000217(k). Sequence gives values of b.at n=19A096032
• sigma(n) + phi(n) is a fourth power.at n=14A114068
• Numbers n such that n^3 +/- 2 and 3*n +/- 2 are all prime.at n=5A268475
• a(n) = Sum_{k=1..n} k * lcm(k,n).at n=20A344508