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A092011 Numbers that can be expressed as the difference of the squares of primes in exactly fifteen distinct ways. 0
207480, 267960, 535920, 542640, 614040, 652080, 674520, 720720, 950040, 1178520, 1197840, 1256640, 1321320, 1324680, 1356600, 1369368, 1441440, 1459920, 1510320, 1543080, 1691760, 1727880, 1802640, 1900080, 1984920, 2088240 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..26.

EXAMPLE

207480 = 457^2-37^2 = 461^2-71^2 = 463^2-83^2 = 467^2-103^2 =

523^2-257^2 = 599^2-389^2 = 661^2-479^2 = 743^2-587^2 = 863^2-733^2 =

967^2-853^2 = 1277^2-1193^2 = 1759^2-1699^2 = 2749^2-2711^2 = 3719^2-3691^2

= 51871^2-51869^2

CROSSREFS

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

Sequence in context: A082176 A178285 A101701 * A216900 A072679 A147705

Adjacent sequences:  A092008 A092009 A092010 * A092012 A092013 A092014

KEYWORD

nonn

AUTHOR

Ray Chandler, Feb 22 2004

STATUS

approved

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Last modified June 23 09:06 EDT 2021. Contains 345395 sequences. (Running on oeis4.)