A092012 Numbers that can be expressed as the difference of the squares of primes in exactly sixteen distinct ways.

175560, 341880, 408408, 545160, 600600, 656040, 840840, 912912, 942480, 954408, 1007160, 1302840, 1350888, 1367520, 1442280, 1609608, 2457840, 2492280, 3243240, 3651648, 3797640, 3982440, 4212600, 4370520, 4440072, 4775232

Offset: 1

Author

Ray Chandler, Feb 22 2004

Keywords

• nonn

Examples

			175560 = 421^2-41^2 = 431^2-101^2 = 439^2-131^2 = 463^2-197^2 =
499^2-271^2 = 523^2-313^2 = 557^2-367^2 = 853^2-743^2 = 1193^2-1117^2 =
1493^2-1433^2 = 2017^2-1973^2 = 2111^2-2069^2 = 6277^2-6263^2 =
7321^2-7309^2 = 14633^2-14627^2 = 43891^2-43889^2
		

Crossrefs

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