22520

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 15.at n=9A031693
• Row squared sums of triangle A114700: a(n) = Sum_{k=0..n} A114700(n,k)^2.at n=14A116467
• a(n) = 225n^2 + 2n.at n=9A158228
• a(n) = n*(14*n + 3).at n=40A195025
• Number of partitions of 2n into parts such that the largest multiplicity equals n.at n=48A232697
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 337", based on the 5-celled von Neumann neighborhood.at n=31A271287
• a(n) = Sum_{k=1..n} phi(gcd(k, n))^(n/gcd(k, n)).at n=32A342541