A092006 Numbers that can be expressed as the difference of the squares of primes in exactly ten distinct ways.

21840, 43680, 57120, 73080, 87360, 101640, 127512, 128520, 130200, 162792, 173712, 181608, 184800, 196560, 200928, 221760, 229320, 231840, 240240, 271320, 290472, 310128, 327600, 350280, 370272, 426360, 442680, 461472, 471240, 494760

Offset: 1

Author

Ray Chandler, Feb 22 2004

Keywords

• nonn

Examples

			21840 = 149^2-19^2 = 151^2-31^2 = 157^2-53^2 = 179^2-101^2 =
223^2-167^2 = 281^2-239^2 = 379^2-349^2 = 467^2-443^2 = 787^2-773^2 =
1097^2-1087^2
		

Crossrefs

Cf. A090781, A090782, A090788, A092000-A092020.