23937

Appears in sequences

• Numbers n with property that average digit of n^2 is s=7.at n=26A164773
• a(n) = 2*n*(n+1)*(n+2)/3 + (-1)^n.at n=32A179783
• Ulam numbers k such that k/3 is also an Ulam number.at n=34A287212
• Numbers k such that (17*10^k - 131)/3 is prime.at n=18A297416