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Search: id:A123336
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A123336 Sequence allows us to find X values of the equation: 3(X-Y)^4-16XY=0 with X>=Y. +0
1
0, 3, 32, 405, 5488, 75867, 1054560, 14680173, 204438752, 2847353715, 39658107808 (list; graph; listen)
OFFSET

0,2

COMMENT

Sequence gives X values. To find Y values: b(n)=c(n)*(-1+d(n))which gives: 0,1,24,375,5376,75449,1053000,14674351,204417024,2847272625,39657805176,...

FORMULA

a(n)=c(n)*(1+d(n)) with c(0)=0,c(1)=1 and c(n)=4*c(n-1)-c(n-2) d(0)=1,d(1)=2 and d(n)=4*d(n-1)-d(n-2)

CROSSREFS

Sequence in context: A091706 A091705 A137215 this_sequence A058479 A129431 A054780

Adjacent sequences: A123333 A123334 A123335 this_sequence A123337 A123338 A123339

KEYWORD

nonn

AUTHOR

Mohamed Bouhamida (bhmd95(AT)yahoo.fr), Oct 11 2006

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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