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A145206
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Numbers X such that 201*X^2+67 is a square
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0
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293, 301845963, 310958692622677, 320346535552653772667, 330017797460677431371194053, 339981034765694936488737747687403, 350245062204941248823872062858714502517
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n+2)=1030190*a(n+1)-a(n)
a(n)=(293/2)*{[515095+124*sqrt(17255649)]^n+[515095-124*sqrt(17255649))^n}-(31/879)*sqrt(17255649)*{[515095-124 *sqrt(17255649)]^n-[515095+124*sqrt(17255649)]^n}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Nov 25 2008]
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EXAMPLE
| The first relation is 4154^2=201*293^2+67
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CROSSREFS
| Sequence in context: A109182 A085502 A108828 * A153579 A132187 A128965
Adjacent sequences: A145203 A145204 A145205 * A145207 A145208 A145209
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KEYWORD
| easy,nonn
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AUTHOR
| Richard Choulet (richardchoulet(AT)yahoo.fr), Oct 04 2008
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