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Search: id:A123268
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| A123268 |
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Sequence allows us to find X values of the equation: 3(X-Y)^4-XY=0 with X>=Y. |
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1
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| 0, 8, 1372, 263640, 51109688, 9914526952, 1923360309780, 373121890730168, 72383722120389232, 14042068951066270920, 2724088992528477983948, 528459222478004446530712, 102518365071690621381979560
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OFFSET
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0,2
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COMMENT
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Sequence gives X values. To find Y values: b(n)=c(n)*(-1+d(n))which gives: 0,6,1344,263250,51104256,9914451294,...
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FORMULA
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a(n)=c(n)*(1+d(n)) with c(0)=0,c(1)=1 and c(n)=14*c(n-1)-c(n-2) d(0)=1,d(1)=7 and d(n)=14*d(n-1)-d(n-2)
For n>=4, a(n) = 208*a(n-1) - 2718*a(n-2) + 208*a(n-3) - a(n-4) [From Max Alekseyev (maxale(AT)gmail.com), Nov 13 2009]
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CROSSREFS
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Sequence in context: A162090 A017187 A001418 this_sequence A088080 A160103 A064073
Adjacent sequences: A123265 A123266 A123267 this_sequence A123269 A123270 A123271
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KEYWORD
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nonn,new
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AUTHOR
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Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Oct 09 2006
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EXTENSIONS
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More terms from Max Alekseyev (maxale(AT)gmail.com), Nov 13 2009
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