login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A090788 Numbers that can be expressed as the difference of the squares of primes in just two distinct ways. 24
72, 360, 432, 528, 768, 888, 960, 1032, 1080, 1128, 1272, 1392, 1488, 1512, 1608, 1632, 1728, 1920, 2088, 2112, 2232, 2352, 2400, 2448, 2568, 2688, 2808, 3048, 3168, 3240, 3288, 3480, 3648, 3768, 4008, 4032, 4128, 4248, 4272, 4392, 4488, 4512, 4992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..43.

EXAMPLE

72 = 11^2-7^2 = 19^2-17^2.

CROSSREFS

Cf. A078667, A090781, A090782.

Sequence in context: A157909 A107314 A223472 * A192792 A084479 A084478

Adjacent sequences:  A090785 A090786 A090787 * A090789 A090790 A090791

KEYWORD

nonn

AUTHOR

Ray Chandler, Feb 14 2004

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified March 26 21:00 EDT 2017. Contains 284137 sequences.