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A106042 Numbers n such that n*prime(n)-2 is a perfect square. 0
1, 2, 51, 402, 1506, 18258, 3905394 (list; graph; refs; listen; history; internal format)
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

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Last modified February 14 23:44 EST 2012. Contains 205689 sequences.