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A145206
Numbers x such that 201*x^2 + 67 is a square.
1
293, 301845963, 310958692622677, 320346535552653772667, 330017797460677431371194053, 339981034765694936488737747687403, 350245062204941248823872062858714502517
OFFSET
1,1
FORMULA
a(n+2)=1030190*a(n+1)-a(n).
G.f.: 293*(x+1)/(x^2-1030190*x+1). [Colin Barker, Aug 24 2012]
EXAMPLE
293 is a term because 201*293^2 + 67 = 4154^2.
MATHEMATICA
LinearRecurrence[{1030190, -1}, {293, 301845963}, 10] (* Paolo Xausa, Mar 01 2024 *)
CROSSREFS
Sequence in context: A085502 A108828 A239825 * A153579 A132187 A367207
KEYWORD
easy,nonn
AUTHOR
Richard Choulet, Oct 04 2008
STATUS
approved