57834

Appears in sequences

• Intersection of A108027, A108028, A108029 and A108030.at n=23A108109
• Amicable triples: numbers such that sigma(x) = sigma(y) = sigma(z) = x+y+z, x<y<z. We order these triples according to the common value of sigma. Sequence gives z numbers.at n=9A125492
• Numbers k such that (29*10^k + 91)/3 is prime.at n=35A269797
• Wiener index of the n X n rook complement graph.at n=17A292058
• Expansion of 1/(1 - Sum_{k>=1} mu(k)^2*x^k/(1 - x^k)^2).at n=11A307073