A092018 Numbers that can be expressed as the difference of the squares of primes in exactly twenty-two distinct ways.

526680, 2106720, 4037880, 4555320, 4772040, 4924920, 7785960, 9988440, 10330320, 11051040, 11843832, 12525240, 12809160, 13093080, 13933920, 14348040, 15222480, 15513960, 16576560, 19634160, 19677840, 19764360

Offset: 1

Author

Ray Chandler, Feb 22 2004

Keywords

• nonn

Examples

			526680 = 727^2-43^2 = 733^2-103^2 = 761^2-229^2 = 839^2-421^2 =
863^2-467^2 = 883^2-503^2 = 941^2-599^2 = 1009^2-701^2 = 1123^2-857^2 =
1171^2-919^2 = 1307^2-1087^2 = 1429^2-1231^2 = 1481^2-1291^2 = 1553^2-1373^2
= 1951^2-1811^2 = 2153^2-2027^2 = 3797^2-3727^2 = 6949^2-6911^2 =
7333^2-7297^2 = 9419^2-9391^2 = 11981^2-11959^2 = 14639^2-14621^2
		

Crossrefs

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

Extensions

a(9)-a(22) from Donovan Johnson, Nov 26 2008