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A092015
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Numbers that can be expressed as the difference of the squares of primes in exactly nineteen distinct ways.
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0
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120120, 513240, 722568, 2348808, 3721872, 4269720, 5442360, 5754840, 6109488, 7549080, 8288280, 9043320, 10986360, 12538680, 13037640, 13813800, 14395920, 15181320, 15408120, 15571920, 15735720, 16151520, 16379160, 16696680
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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EXAMPLE
| 120120 = 347^2-17^2 = 349^2-41^2 = 353^2-67^2 = 383^2-163^2 =
421^2-239^2 = 463^2-307^2 = 467^2-313^2 = 499^2-359^2 = 521^2-389^2 =
601^2-491^2 = 757^2-673^2 = 1031^2-971^2 = 1181^2-1129^2 = 1451^2-1409^2 =
2017^2-1987^2 = 2741^2-2719^2 = 4297^2-4283^2 = 5011^2-4999^2 =
15017^2-15013^2
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CROSSREFS
| Cf. A090781, A090782, A090788, A092000-A092020.
Sequence in context: A175581 A043622 A190378 * A061128 A068136 A135495
Adjacent sequences: A092012 A092013 A092014 * A092016 A092017 A092018
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KEYWORD
| nonn
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AUTHOR
| Ray Chandler (rayjchandler(AT)sbcglobal.net), Feb 22 2004
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EXTENSIONS
| a(13)-a(24) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Nov 26 2008
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