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

Author

Ray Chandler, Feb 22 2004

Keywords

• nonn

Examples

			240 = 17^2-7^2 = 19^2-11^2 = 23^2-17^2 = 61^2-59^2
		

Crossrefs

Cf. A090781, A090782, A090788, A092001-A092020.