A092011 Numbers that can be expressed as the difference of the squares of primes in exactly fifteen distinct ways.

207480, 267960, 535920, 542640, 614040, 652080, 674520, 720720, 950040, 1178520, 1197840, 1256640, 1321320, 1324680, 1356600, 1369368, 1441440, 1459920, 1510320, 1543080, 1691760, 1727880, 1802640, 1900080, 1984920, 2088240

Offset: 1

Author

Ray Chandler, Feb 22 2004

Keywords

• nonn

Examples

			207480 = 457^2-37^2 = 461^2-71^2 = 463^2-83^2 = 467^2-103^2 =
523^2-257^2 = 599^2-389^2 = 661^2-479^2 = 743^2-587^2 = 863^2-733^2 =
967^2-853^2 = 1277^2-1193^2 = 1759^2-1699^2 = 2749^2-2711^2 = 3719^2-3691^2
= 51871^2-51869^2
		

Crossrefs

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