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A145205
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Numbers X such that (X^2-67)/201 is a square
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0
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4154, 4279405106, 4408600346145986, 4541695990591853912234, 4678809792543413381498198474, 4820063060175757335495037232017826, 4965580763957784639661088992670945968466
(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)=2077*{[515095+124*sqrt(17255649)]^n+[515095-124*sqrt(17255649)]^n}-(1/2)*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: A072896 A052464 A161752 * A196494 A104824 A168663
Adjacent sequences: A145202 A145203 A145204 * A145206 A145207 A145208
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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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