84120

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 29.at n=9A031707
• Numbers n such that sopf(n) = sopf(n-1) + sopf(n-2), where sopf(x) = sum of the distinct prime factors of x.at n=15A075565
• Number of compositions of n such that the cardinality of the set of parts is 2.at n=23A131661
• a(n) = 841*n^2 + 2*n.at n=9A158403