28587

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 13.at n=12A031691
• a(n) = sum of n-th column in array in A100452.at n=31A100454
• a(n) = 169*n^2 + 2*n.at n=12A158220
• a(n) = n*(n^3 + 2).at n=13A185065
• Quadruples (a,b,c,d) of the form ( n*(n^3-1), n^3-1, 2*n^3+1, n*(n^3+2) ).at n=51A204767
• Numbers m such that 20*m + 1, 80*m + 1, 100*m + 1, and 200*m + 1 are all primes.at n=33A372186