A092004 Numbers that can be expressed as the difference of the squares of primes in exactly eight distinct ways.

7728, 17160, 25080, 26040, 30360, 35112, 42840, 50160, 53592, 56760, 63840, 65520, 67320, 68640, 79800, 90480, 93912, 95880, 98280, 105672, 106680, 112560, 120360, 135408, 135960, 139080, 139128, 140448, 148512, 150360, 154440, 158928

Offset

1,1

Links

Table of n, a(n) for n=1..32.

Example

7728 = 97^2-41^2 = 107^2-61^2 = 113^2-71^2 = 173^2-149^2 =
283^2-269^2 = 487^2-479^2 = 647^2-641^2 = 1933^2-1931^2

Crossrefs

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

Sequence in context: A259832 A366490 A202597 * A278019 A146960 A179574

Adjacent sequences: A092001 A092002 A092003 * A092005 A092006 A092007

Keyword

nonn

Author

Ray Chandler, Feb 22 2004

Status

approved