744768

Appears in sequences

• Numbers k such that A064839(k) = A064839(k+1).at n=20A343133
• Table read by antidiagonals: T(n,k) is the smallest m > 1 such that m^2 - 1 and m^2 + 1 have 2n and 2k divisors, respectively, or -1 if no such m exists.at n=33A373756