|
| |
|
|
A087602
|
|
Primes occurring as larger side of Heronian triangle (sides are consecutive integers, area and inradius are integers).
|
|
1
| | |
|
|
|
OFFSET
| 1,1
|
|
|
COMMENTS
| Next term (if exists) is greater than 10^2000. [From Max Alekseyev (maxale(AT)gmail.com), May 14 2010]
|
|
|
FORMULA
| p, p-1 and p-2 are sides of Heronian triangle.
Primes p such that 3*(p-1)^2 - 12 is a square. [From Max Alekseyev (maxale(AT)gmail.com), May 14 2010]
|
|
|
EXAMPLE
| a(3)=53 because 53, 52 and 51 are sides of Heronian triangle (area is 1170, inradius is 15).
|
|
|
CROSSREFS
| Cf. A001353, A016064, A087601.
Sequence in context: A101149 A056260 A020462 * A086340 A155121 A106914
Adjacent sequences: A087599 A087600 A087601 * A087603 A087604 A087605
|
|
|
KEYWORD
| more,nonn
|
|
|
AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), Aug 07 2003
|
| |
|
|