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A092016 Numbers that can be expressed as the difference of the squares of primes in exactly twenty distinct ways. 0
885360, 3527160, 3723720, 4444440, 7054320, 8921640, 9304680, 9524760, 9817080, 9849840, 9914520, 10038840, 11152680, 11171160, 12113640, 12543960, 13167000, 13728792, 14108640, 14774760, 15495480, 17264520, 17777760, 17882040 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..24.

EXAMPLE

885360 = 941^2-11^2 = 947^2-107^2 = 967^2-223^2 = 977^2-263^2 =

991^2-311^2 = 1123^2-613^2 = 1289^2-881^2 = 1979^2-1741^2 = 2213^2-2003^2 =

2473^2-2287^2 = 2719^2-2551^2 = 3323^2-3187^2 = 4391^2-4289^2 =

7933^2-7877^2 = 11087^2-11047^2 = 13037^2-13003^2 = 14771^2-14741^2 =

18457^2-18433^2 = 44273^2-44263^2 = 55339^2-55331^2

CROSSREFS

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

Sequence in context: A251409 A128286 A250571 * A269219 A224594 A105379

Adjacent sequences:  A092013 A092014 A092015 * A092017 A092018 A092019

KEYWORD

nonn

AUTHOR

Ray Chandler, Feb 22 2004

EXTENSIONS

a(12)-a(24) from Donovan Johnson, Nov 26 2008

STATUS

approved

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Last modified July 19 08:23 EDT 2019. Contains 325155 sequences. (Running on oeis4.)