271259

Appears in sequences

• Indices of the records in the sequence of smallest positive quadratic nonresidues (A053760).at n=12A147971
• Number of nondecreasing -n..n vectors of length 4 whose dot product with some lexicographically greater or equal nondecreasing -n..n vector equals 4.at n=24A226425
• a(n) = smallest number k such that sigma(k+n) - sigma(k) = k + n, or -1 if no solution exists.at n=52A246851