A092000 Numbers that can be expressed as the difference of the squares of primes in exactly four distinct ways.
240, 792, 912, 1248, 2040, 2280, 2760, 3528, 3720, 3960, 4080, 4440, 4680, 4872, 5160, 5520, 5880, 6600, 6720, 6960, 7080, 8520, 8568, 8760, 9072, 9120, 9672, 9912, 10248, 10440, 11088, 11592, 11832, 11880, 12408, 12480, 12720, 13200, 13560
Offset: 1
Keywords
Examples
240 = 17^2-7^2 = 19^2-11^2 = 23^2-17^2 = 61^2-59^2