|
| |
|
|
A106042
|
|
Numbers n such that n*prime(n)-2 is a perfect square.
|
|
0
| | |
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| Next term after 3905394 is greater than 2*10^9. - Ryan Propper (rpropper(AT)stanford.edu), Jun 26 2005
|
|
|
EXAMPLE
| 1*2-2=0^2
2*3-2=2^2
51*233-2=109^2
402*2753-2=1052^2
1506*12611-2=4358^2
18258*203387-2=60938^2
3905394*66166537-2 = 16075024^2
|
|
|
CROSSREFS
| Sequence in context: A078165 A180110 A037058 * A089304 A099368 A132492
Adjacent sequences: A106039 A106040 A106041 * A106043 A106044 A106045
|
|
|
KEYWORD
| more,nonn
|
|
|
AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), May 06 2005
|
|
|
EXTENSIONS
| 3905394 from Ryan Propper (rpropper(AT)stanford.edu), Jun 26 2005
|
| |
|
|