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A145526
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Numbers Y such that 273*Y^2+91 is a square
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0
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11, 16005, 23271259, 33836394581, 49198094449515, 71533995493200229, 104010380249018683451, 151231021348077672537525, 219889801029724686850877899, 319719619466198346603503927621
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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FORMULA
| a(n+2):=1454*a(n+1)-a(n)
a(n)=(11/2)*{[727-44*sqrt(273)]^n+[727+44*sqrt(273)]^n}-(1/3)*sqrt(273)*{[727-44*sqrt(273)]^n -[727+44*sqrt(273)]^n}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Nov 25 2008]
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EXAMPLE
| a(1)=11 because the first relation is : 182^2=273*11^2+91
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CROSSREFS
| Sequence in context: A061965 A013748 A076783 * A068647 A199148 A198668
Adjacent sequences: A145523 A145524 A145525 * A145527 A145528 A145529
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KEYWORD
| easy,nonn
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AUTHOR
| Richard Choulet (richardchoulet(AT)yahoo.fr), Oct 12 2008
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