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A092009 Numbers that can be expressed as the difference of the squares of primes in exactly thirteen distinct ways. 0
236208, 316680, 480480, 644280, 750120, 757680, 792120, 822120, 822360, 896280, 925680, 1015560, 1025640, 1044120, 1067640, 1129128, 1136520, 1255800, 1274280, 1299480, 1391280, 1484280, 1487640, 1489488, 1572648, 1616160, 1707888 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..27.

EXAMPLE

236208 = 487^2-31^2 = 547^2-251^2 = 577^2-311^2 = 643^2-421^2 =

787^2-619^2 = 853^2-701^2 = 2137^2-2081^2 = 2833^2-2791^2 = 4933^2-4909^2 =

8443^2-8429^2 = 14767^2-14759^2 = 19687^2-19681^2 = 59053^2-59051^2

CROSSREFS

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

Sequence in context: A254257 A254303 A269280 * A160920 A235105 A205411

Adjacent sequences:  A092006 A092007 A092008 * A092010 A092011 A092012

KEYWORD

nonn

AUTHOR

Ray Chandler, Feb 22 2004

STATUS

approved

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Last modified December 4 15:36 EST 2021. Contains 349526 sequences. (Running on oeis4.)