83107

Appears in sequences

• Number of primes of the form 30k + 17 less than 10^n.at n=6A091169
• Triangle T(n, k) = Numbers of inequivalent (mod D_3) ways to place k points on a triangular grid of side n so that no three of them are vertices of an equilateral triangle with sides parallel to the grid. Triangle read by rows.at n=39A243207
• Numbers k such that there are exactly five biquadratefree powerful numbers (A338325) between k^2 and (k+1)^2.at n=7A338392